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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Cash flows from operating activities:    
Net loss $ (2,047) $ (815)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:    
Depreciation and amortization 847 852
Accretion of interest on contractual payment obligation 32 44
Stock-based compensation expense 640 687
Amortization of debt issuance costs 24 25
Changes in operating assets and liabilities, net of acquisition:    
Accounts receivable (1,671) 157
Inventories 208 1,431
Prepaid expenses and other assets (170) 318
Accounts payable (324) 268
Contractual payment obligation liability (319) (310)
Deferred revenue (547) 560
Accrued expenses and other liabilities (382) (1,728)
Net cash (used in) provided by operating activities (3,709) 1,489
Cash flows from investing activities:    
Capital expenditures (137) (65)
Acquisition of business, net of cash acquired   (1,287)
Net cash used in investing activities (137) (1,352)
Cash flows from financing activities:    
Proceeds from issuance of debt, net of issuance costs 4,346 1,646
Repayments of debt (709) (1,371)
Repayments of notes payable   (2,000)
Taxes paid related to net share settlement of restricted stock units (225) (228)
Net cash provided by (used in) financing activities 3,412 (1,953)
Effect of exchange rates on cash (253) (120)
Net decrease in cash (687) (1,936)
Cash at beginning of period 9,383 10,866
Cash at end of period 8,696 8,930
Supplemental Disclosures of Cash Flow Information:    
Interest paid 228 245
Taxes paid, net $ 39 29
Common Stock    
Non-cash investing and financing activities:    
Common stock issued for acquisition of business, net   $ 1,635