CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) $ in Thousands	9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)
Cash flows from operating activities
Net income	$ 84,302	$ 48,268
Adjustments to reconcile net income to cash provided by (used in) operating activities
Depreciation and amortization	30,667	30,553
Unrealized foreign exchange gain	(2,885)	(1,069)
Amortization of debt issuance costs	990	3,036
Amortization of discount on bonds payable		3,963
Change in fair value of common stock warrants		6,112
Share-based compensation	11,576	7,123
Loss on disposals of property, plant and equipment	466	82
Deferred income taxes	28,415	25,575
Changes in operating assets and liabilities
Accounts receivable	(21,432)	(2,268)
Inventories	12,849	29,783
Accounts payable	2,236	(387)
Accrued taxes	(22,168)	(1,872)
Accrued expenses and other liabilities	(141,445)	132,355
Other assets	9,128	3,793
Other noncurrent liabilities	(10,583)	(154,993)
Interest due to related parties		(8,026)
Cash flows provided by (used in) operating activities	(17,884)	122,028
Cash flows from investing activities
Additions to property, plant and equipment	(12,781)	(13,502)
Cash flows used in investing activities	(12,781)	(13,502)
Cash flows from financing activities
Decrease in short-term borrowings, net	(31,719)	(28,163)
Proceeds from delayed draw term loan A facility	100,000
Repayment of term loan facilities	(17,814)
Repayment of senior term loan facility		(30,000)
Proceeds from senior term loan facility		375,000
Repayment of secured floating rate notes		(375,000)
Proceeds from exercise of common stock warrants		34,503
Repayment of bonds		(34,503)
Debt issuance costs		(6,469)
Dividends paid on common stock	(26,802)
Dividends paid on Series A redeemable convertible preferred stock		(13,861)
Dividends paid to noncontrolling interests	(2,400)	(3,000)
Payment of employee restricted stock tax withholdings	(903)
Cash flows provided by (used in) financing activities	20,362	(81,493)
Effect of foreign exchange rate changes on cash	4,354	2,701
Net increase (decrease) in cash	(5,949)	29,734
Cash and restricted cash, beginning of year	79,140	59,134
Cash and restricted cash, end of period	73,191	88,868
Supplemental information
Non-cash additions to property, plant and equipment	200	355
Dividend declared not paid	645
Non-cash conversion of common stock warrants		$ 28,996
Noncontrolling Interest
Supplemental information
Dividend declared not paid	$ 2,400