Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets, Current [Abstract]
Cash and Cash Equivalents	$ 292,656	$ 224,253
Receivables, net	115,446	80,103
Inventories	70,941	83,482
Prepaid expenses and other current assets	6,130	4,492
Total current assets	485,173	392,330
Restricted cash	781	473
Property, plant, and equipment, net	162,232	115,160
Deferred income taxes	1,311	3,907
Other assets	853	676
Total assets	650,350	512,546
Liabilities, Current [Abstract]
Current maturities of long-term debt	3,960	3,960
Accounts payable	35,238	31,428
Other current liabilities	59,629	70,459
Total current liabilities	98,827	105,847
Long-term debt	379,177	383,137
Deferred income taxes	12,660	3,268
Other long-term liabilities	13,348	11,013
Total liabilities	504,012	503,265
Commitments and Contingencies
Preferred stock	0	0
Common stock	1,965	1,962
Additional paid-in capital	71,420	64,899
Retained earnings (accumulated deficit)	72,692	(57,549)
Accumulated other comprehensive income (loss)	261	(31)
Total stockholders' equity	146,338	9,281
Total liabilities and stockholders' equity	$ 650,350	$ 512,546
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	1,500,000,000	1,500,000,000
Common shares outstanding	196,524,010	196,216,596
Common Stock, Shares, Issued	196,524,010	196,216,596
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	150,000,000	150,000,000
Preferred Stock, Shares Outstanding	0	0
Preferred Stock, Shares Issued	0	0