Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Arising During Period, Net of Tax	$ (42)	$ 3
Cash flows from operating activities
Net loss	(3,067)	(7,340)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,876	1,886
Deferred Income Tax Expense (Benefit)	80	80
Non-cash interest expense (income)	0	(1)
Share‑based compensation	1,971	1,936
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	659	(1,720)
Prepaid expenses and other assets	(40)	419
Deferred revenue, including long-term portion	2,334	2,003
Accounts payable	(62)	(130)
Accrued expenses and other	(559)	(463)
Net cash provided by (used in) operating activities	3,192	(3,330)
Cash flows from investing activities
Increase (Decrease) in Restricted Cash	(400)	0
Purchases of property and equipment, including software development costs	(2,889)	(1,552)
Net cash used in investing activities	(3,289)	(1,552)
Cash flows from financing activities
Principal payments on loan payable	0	(4)
Payments on capital leases	(226)	(195)
Proceeds from exercise of options and warrants	1,120	595
Payments for Repurchase of Common Stock	56	0
Net cash provided by financing activities	950	396
Effect of changes in foreign exchange rates on cash and cash equivalents	(121)	10
Net increase (decrease) in cash and cash equivalents	732	(4,476)
Cash and cash equivalents, beginning of period	66,758	77,130
Cash and cash equivalents, end of period	67,490	72,654
Supplemental Cash Flow Information [Abstract]
Net Income (Loss) Available to Common Stockholders, Basic	(3,067)	(7,359)
Redeemable Non-Controlling Interest [Member]
Supplemental Cash Flow Information [Abstract]
Accretion	$ 0	$ 94