CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash Flows From Operating Activities:
Net income (loss)	$ 9,384	$ (7,312)
Reconciliation to net cash provided by operating activities:
Impairment of long-lived assets	331	74
Loss (gain) on disposal of property, plant, and equipment	598	(9)
Depreciation of property, plant, and equipment	5,995	5,632
Amortization of product rights, trademarks, and patents	1,050	979
Imputed interest accretion	36	56
Employee share-based compensation expense	7,234	5,757
Non-employee share-based compensation expense	815	173
Reserve for income tax liabilities		16
Changes in deferred taxes		(3,547)
Changes in operating assets and liabilities:
Accounts receivable, net	10,164	2,450
Inventories, net	(17,352)	564
Income tax refund and deposits	185
Prepaid expenses and other assets	3,175	(4,989)
Income taxes payable	3,574	(387)
Accounts payable and accrued liabilities	(1,933)	4,384
Net cash provided by operating activities	23,256	3,841
Cash Flows From Investing Activities:
Acquisition of business	(4,761)
Purchases of property, plant, and equipment	(8,457)	(6,740)
Capitalized labor, overhead, and interest on self-constructed assets	(887)	(875)
Proceeds from the sale of property, plant and equipment		33
Decrease (increase) in restricted cash	(105)	210
Deposits and other assets, net	(3,216)	(1,392)
Net cash used in investing activities	(17,426)	(8,764)
Cash Flows From Financing Activities:
Repurchase of common stock	(1,242)	(741)
Net proceeds from equity plans	4,168	10,723
Payments on treasury stock	(8,190)	(2,715)
Proceeds from issuance of long-term debt	6,607	6,786
Principal payments on long-term debt	(6,414)	(2,524)
Net cash provided by (used in) financing activities	(5,071)	11,529
Effect of exchange rate changes on cash	(173)	29
Net increase in cash and cash equivalents	586	6,635
Cash and cash equivalents at beginning of period	66,074	67,828
Cash and cash equivalents at end of period	66,660	74,463
Noncash Investing and Financing Activities:
Equipment acquired under capital leases	1,237	150
Supplemental Disclosures of Cash Flow Information:
Interest paid	947	$ 897
Income taxes paid	$ 553