Restatement of Condensed Consolidated Financial Statements - Condensed Consolidated Statement of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Operating activities:
Net loss	$ (4,793)	$ (3,776)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities net of effect of acquisitions
Depreciation and amortization	420	562
Loss (gain) on marketable securities	(192)	494
Share-based compensation	(1,167)	87
Provision for doubtful accounts	11	63
Provision for obsolete inventory	0	41
Gain on sales of assets	(43)	(266)
Deferred income tax	34	45
Non-cash compensation	101	0
Changes in certain assets and liabilities:
Accounts receivable	(467)	(269)
Inventory	588	1,266
Other current assets	303	182
Accounts payable	725	(1,312)
Related party payables, net	1,164	(132)
Accrued commissions	734	636
Accrued liabilities	129	(343)
Deferred revenue	(876)	1,205
Taxes payable	150	342
Other liabilities	(500)	(549)
Net cash used in operating activities	(3,679)	(1,040)
Investing activities:
Capital expenditures	(316)	(335)
Proceeds from the sale of property, plant and equipment	28	1,334
Purchase of investments available for sale	(18,876)	0
Sale of marketable securities	10,185	3,418
Cash held as collateral	(3,000)	0
Acquisitions, net of cash purchased	(3,135)	0
Net cash (used in) provided by investing activities	(15,114)	4,417
Financing activities:
Net borrowings (payments) on long-term debt and revolving credit facility	2,978	(1,430)
Payments on debt	(247)	(614)
Stock issuances	18,360	0
Net cash (used in) provided by financing activities	21,091	(2,044)
Effect of exchange rate changes on cash	228	(10)
Increase in cash and cash equivalents	2,526	1,323
Cash and cash equivalents at beginning of period	2,606	3,877
Cash and cash equivalents at end of period	5,132	5,200
Supplemental disclosure of cash flow information:
Interest	595	65
Income taxes	0	$ 122
Accounting Adjustments Errors from Prior Year
Operating activities:
Net loss	0
Adjustments to reconcile net loss to net cash provided by (used in) operating activities net of effect of acquisitions
Depreciation and amortization	3
Loss (gain) on marketable securities	0
Share-based compensation	0
Provision for doubtful accounts	3
Provision for obsolete inventory	0
Gain on sales of assets	0
Deferred income tax	0
Non-cash compensation	0
Changes in certain assets and liabilities:
Accounts receivable	94
Inventory	(363)
Other current assets	80
Accounts payable	(1,646)
Related party payables, net	(25)
Accrued commissions	3
Accrued liabilities	0
Deferred revenue	(1,346)
Taxes payable	0
Other liabilities	1,648
Net cash used in operating activities	(1,549)
Investing activities:
Capital expenditures	31
Proceeds from the sale of property, plant and equipment	(85)
Purchase of investments available for sale	0
Sale of marketable securities	1,284
Cash held as collateral	0
Acquisitions, net of cash purchased	432
Net cash (used in) provided by investing activities	1,662
Financing activities:
Net borrowings (payments) on long-term debt and revolving credit facility	(6)
Payments on debt	0
Stock issuances	(9)
Net cash (used in) provided by financing activities	(15)
Effect of exchange rate changes on cash	(98)
Increase in cash and cash equivalents	0
Cash and cash equivalents at beginning of period	0
Cash and cash equivalents at end of period	0
Supplemental disclosure of cash flow information:
Interest	0
Income taxes	0
As Previously Reported
Operating activities:
Net loss	(5,032)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities net of effect of acquisitions
Depreciation and amortization	629
Loss (gain) on marketable securities	7
Share-based compensation	0
Provision for doubtful accounts	(7)
Provision for obsolete inventory	0
Gain on sales of assets	(43)
Deferred income tax	0
Non-cash compensation	0
Changes in certain assets and liabilities:
Accounts receivable	(21)
Inventory	858
Other current assets	210
Accounts payable	1,864
Related party payables, net	404
Accrued commissions	588
Accrued liabilities	0
Deferred revenue	600
Taxes payable	0
Other liabilities	(1,670)
Net cash used in operating activities	(1,613)
Investing activities:
Capital expenditures	(347)
Proceeds from the sale of property, plant and equipment	113
Purchase of investments available for sale	(18,876)
Sale of marketable securities	8,901
Cash held as collateral	(3,000)
Acquisitions, net of cash purchased	(3,567)
Net cash (used in) provided by investing activities	(16,776)
Financing activities:
Net borrowings (payments) on long-term debt and revolving credit facility	2,984
Payments on debt	(247)
Stock issuances	18,369
Net cash (used in) provided by financing activities	21,106
Effect of exchange rate changes on cash	310
Increase in cash and cash equivalents	3,027
Cash and cash equivalents at beginning of period	2,606
Cash and cash equivalents at end of period	5,633
Supplemental disclosure of cash flow information:
Interest	595
Income taxes	0
Restatement Adjustments | Accounting Adjustments Errors from Prior Year
Operating activities:
Net loss	239
Adjustments to reconcile net loss to net cash provided by (used in) operating activities net of effect of acquisitions
Depreciation and amortization	(212)
Loss (gain) on marketable securities	(199)
Share-based compensation	(1,167)
Provision for doubtful accounts	15
Provision for obsolete inventory	0
Gain on sales of assets	0
Deferred income tax	34
Non-cash compensation	101
Changes in certain assets and liabilities:
Accounts receivable	(540)
Inventory	93
Other current assets	13
Accounts payable	507
Related party payables, net	785
Accrued commissions	143
Accrued liabilities	129
Deferred revenue	(130)
Taxes payable	150
Other liabilities	(478)
Net cash used in operating activities	(517)
Investing activities:
Capital expenditures	0
Proceeds from the sale of property, plant and equipment	0
Purchase of investments available for sale	0
Sale of marketable securities	0
Cash held as collateral	0
Acquisitions, net of cash purchased	0
Net cash (used in) provided by investing activities	0
Financing activities:
Net borrowings (payments) on long-term debt and revolving credit facility	0
Payments on debt	0
Stock issuances	0
Net cash (used in) provided by financing activities	0
Effect of exchange rate changes on cash	16
Increase in cash and cash equivalents	(501)
Cash and cash equivalents at beginning of period	0
Cash and cash equivalents at end of period	(501)
Supplemental disclosure of cash flow information:
Interest	0
Income taxes	0
Reclassification Adjustments | Accounting Adjustments Errors from Prior Year
Operating activities:
Net loss	0
Adjustments to reconcile net loss to net cash provided by (used in) operating activities net of effect of acquisitions
Depreciation and amortization	0
Loss (gain) on marketable securities	0
Share-based compensation
Provision for doubtful accounts	0
Provision for obsolete inventory	0
Gain on sales of assets	0
Deferred income tax	0
Non-cash compensation	0
Changes in certain assets and liabilities:
Accounts receivable	0
Inventory	0
Other current assets	0
Accounts payable	0
Related party payables, net	0
Accrued commissions	0
Accrued liabilities	0
Deferred revenue	0
Taxes payable	0
Other liabilities	0
Net cash used in operating activities	0
Investing activities:
Capital expenditures	0
Proceeds from the sale of property, plant and equipment	0
Purchase of investments available for sale	0
Sale of marketable securities	0
Cash held as collateral	0
Acquisitions, net of cash purchased	0
Net cash (used in) provided by investing activities	0
Financing activities:
Net borrowings (payments) on long-term debt and revolving credit facility	0
Payments on debt	0
Stock issuances	0
Net cash (used in) provided by financing activities	0
Effect of exchange rate changes on cash	0
Increase in cash and cash equivalents	0
Cash and cash equivalents at beginning of period	0
Cash and cash equivalents at end of period	0
Supplemental disclosure of cash flow information:
Interest	0
Income taxes	$ 0