Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net income (loss)	$ (1,899)	$ 2,374
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation expense	2,049	1,534
Depreciation	1,157	913
(Gain) loss on sales of fixed assets	25	8
Non cash restructuring charge	(79)	(120)
Amortization Of Catalog Costs	8	37
Provision for allowance for doubtful accounts	3	(34)
Amortization of intangible assets	2,137	1,839
Amortization of deferred financing costs	58	46
Deferrred Income Taxes	(1,024)	259
Changes in operating assets and liabilities:
(Increase) decrease in accounts receivable	754	(557)
Increase in inventories	(1,310)	(2,649)
Increase in other receivables and other assets	(407)	(466)
Increase in trade accounts payable	35	446
(Decrease) increase in accrued income taxes	(362)	(107)
Increase in accrued expenses	(2,046)	(486)
(Decrease) increase in deferred revenue	158	(38)
Increase (decrease) in other liabilities	(316)	89
Net cash provided by operating activities	(1,059)	3,088
Cash flows (used in) provided by investing activities:
Additions to property, plant and equipment	(2,298)	(1,224)
Proceeds from sales of property, plant and equipment	6	76
Acquisitions, net of cash acquired	(4,545)	0
Net cash used in investing activities	(6,837)	(1,148)
Cash flows provided by (used in) financing activities:
Repayments of debt	(6,100)	(3,750)
Net proceeds from issuance of debt	4,800	2,200
Payments of debt issuance costs	(32)	0
Net proceeds from issuance of common stock	1,953	1,415
Net cash (used in) provided by financing activities	621	(135)
Effect of exchange rate changes on cash	(769)	(842)
Increase in cash and cash equivalents	(8,044)	963
Cash and cash equivalents at the begining of period	14,134	25,771
Cash and cash equivalents at the end of period	6,090	26,734
Supplemental disclosures of cash flow information [Abstract]
Cash paid for interest	625	757
Cash paid for income taxes, net of refunds	$ 625	$ 451