CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash Flows From Operating Activities:
Net income (loss)	$ 2,489	$ (665)
Reconciliation to net cash provided by operating activities:
Impairment of long-lived assets	217
Loss on disposal of property, plant, and equipment	19	4
Depreciation of property, plant, and equipment	2,947	2,771
Amortization of product rights, trademarks, and patents	481	481
Imputed interest accretion	18	28
Employee share-based compensation expense	3,398	2,224
Non-employee share-based compensation expense	453	6
Reserve for income tax liabilities		547
Changes in deferred taxes		(4,111)
Changes in operating assets and liabilities:
Accounts receivable, net	10,198	621
Inventories, net	(10,774)	(4,486)
Income tax refund and deposits	(169)
Prepaid expenses and other assets	1,392	(2,311)
Income taxes payable	1,180	(131)
Accounts payable and accrued liabilities	2,081	6,360
Net cash provided by operating activities	13,930	1,338
Cash Flows From Investing Activities:
Acquisition of business	(4,761)
Purchases of property, plant, and equipment	(3,528)	(3,780)
Capitalized labor, overhead, and interest on self-constructed assets	(418)	(395)
Deposits and other assets, net	(713)	(870)
Net cash used in investing activities	(9,420)	(5,045)
Cash Flows From Financing Activities:
Repurchase of common stock	(1,083)	(572)
Net proceeds from equity plans	104	910
Payments on treasury stock	(4,722)	(1,489)
Proceeds from issuance of long-term debt	3,725	6,789
Principal payments on long-term debt	(5,057)	(1,193)
Net cash provided by (used in) financing activities	(7,033)	4,445
Effect of exchange rate changes on cash	(219)	22
Net increase (decrease) in cash and cash equivalents	(2,742)	760
Cash and cash equivalents at beginning of period	66,074	67,828
Cash and cash equivalents at end of period	63,332	68,588
Noncash Investing and Financing Activities:
Equipment acquired under capital leases	301	9
Supplemental Disclosures of Cash Flow Information:
Interest paid	517	$ 469
Income taxes paid	$ 367