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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Cash flows from operating activities:    
Net loss $ (2,370) $ (4,064)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:    
Stock-based compensation expense 591 1,012
Depreciation 538 495
Gain on sale of Denville 0 (1,227)
Loss on disposal of fixed assets 0 0
Amortization Of Catalog Costs 5 6
Provision for allowance for doubtful accounts (16) 5
Amortization of Intangible Assets 1,430 1,150
Amortization of deferred financing costs 91 276
Deferrred Income Taxes (1) (1,354)
Changes in operating assets and liabilities:    
(Increase) decrease in accounts receivable 2,695 149
(Increase) decrease in inventories (1,416) 799
Decrease (increase) in other receivables and other assets 536 650
Increase (decrease) in trade accounts payable (118) 1,346
Increase in accrued income taxes 380 173
(Decrease) increase in accrued expenses (76) 850
(Decrease) increase in deferred revenue (116) 429
(Decrease) increase in other liabilities (143) (247)
Net cash provided by operating activities 2,010 448
Cash flows used in investing activities:    
Additions to property, plant and equipment (143) (493)
Additions to catalog costs (9) (13)
Acquisitions, net of cash acquired 0 (67,413)
Disposition, net of cash sold 0 15,730
Net cash used in investing activities (152) (52,189)
Cash flows provided by (used in) financing activities:    
Proceeds from issuance of debt 0 67,000
Repayments of debt (4,583) (14,047)
Payments of debt issuance costs 0 (1,928)
Net proceeds from (net taxes paid for) issuance of common stock (421) 219
Net cash provided by (used in) financing activities (5,004) 51,244
Effect of exchange rate changes on cash 3 755
(Decrease) increase in cash and cash equivalents (3,143) 258
Cash and cash equivalents at the begining of period 8,173 5,733
Cash and cash equivalents at the end of period 5,030 5,991
Supplemental cash flow information [Abstract]    
Cash paid for interest 927 944
Cash refunded for income taxes $ 94 $ (489)