Annual report pursuant to Section 13 and 15(d)

Organization and Significant Accounting Policies ASC 606 Adjustments Statements of Operations (Details)

v3.19.1
Organization and Significant Accounting Policies ASC 606 Adjustments Statements of Operations (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]                      
Revenue from Contract with Customer, Excluding Assessed Tax                 $ 1,382,818 $ 1,200,181 $ 757,338
Net sales (1) $ 355,794 $ 350,175 $ 349,233 $ 327,616 $ 318,091 $ 306,576 $ 301,568 $ 273,946 1,382,818 1,200,181 757,338
Cost of sales (1)                 924,276 860,744 571,944
Research and development (1)                 44,612 39,114 26,693
Operating income (loss) 54,057 61,616 50,000 35,176 21,646 32,002 31,597 27,607 200,849 112,852 34,968
Income tax expense (benefit) (1)                 (39,460) 9,132 4,294
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest                 206,587 254,127 47,157
Net Income (Loss) Available to Common Stockholders, Basic $ 93,420 $ 40,806 $ 37,141 $ 35,220 $ 2,280 $ 18,589 $ 12,819 $ 220,439 $ 206,587 $ 254,127 $ 47,157
Earnings Per Share, Basic $ 1.60 $ 0.70 $ 0.64 $ 0.61 $ 0.04 $ 0.33 $ 0.26 $ 4.65 $ 3.57 $ 4.81 $ 1.01
Earnings Per Share, Diluted $ 1.58 $ 0.69 $ 0.63 $ 0.60 $ 0.04 $ 0.32 $ 0.22 $ 3.82 $ 3.50 $ 4.33 $ 0.85
Restatement Adjustment | Accounting Standards Update 2014-09 [Member]                      
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]                      
Revenue from Contract with Customer, Excluding Assessed Tax                   $ 255 $ (453)
Cost of sales (1)                   1,211 1,080
Research and development (1)                   (505) (705)
Operating income (loss)                   (451) (828)
Income tax expense (benefit) (1)                   (49) 4
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest                   $ (402) $ (832)
Earnings Per Share, Basic                   $ (0.01) $ (0.02)
Earnings Per Share, Diluted                   $ (0.01) $ (0.02)
Scenario, Previously Reported                      
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]                      
Revenue from Contract with Customer, Excluding Assessed Tax                   $ 1,199,926 $ 757,791
Cost of sales (1)                   859,533 570,864
Research and development (1)                   39,619 27,398
Operating income (loss)                   113,303 35,796
Income tax expense (benefit) (1)                   9,181 4,290
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest                   $ 254,529 $ 47,989
Earnings Per Share, Basic                   $ 4.82 $ 1.03
Earnings Per Share, Diluted                   $ 4.34 $ 0.87