Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flow from operating activities
Net loss	$ (5,432)	$ (13,907)
Adjustments required to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation of property and equipment	557	507
Amortization of intangibles	2,438	2,451
Bad debt expense	30	(3)
Mark-to-market expense (income)	(177)	32
Stock-based compensation expense	1,501	1,491
Change in unrealized gain on short-term investments		7
Net changes in operating assets and liabilities:
Decrease (increase) in accounts receivable	(3,232)	6,099
Increase in prepaid expenses and other current assets and other long-term assets	(1,402)	(284)
Increase in accounts payable and accrued expenses	6,029	1,825
Increase in deferred rent and security deposits payable	80	68
Increase (decrease) in deferred revenue	(21)	67
Net cash (used in) provided by operating activities	371	(1,647)
Cash flows from investing activities
Purchase of property plant and equipment	(1,404)	(542)
Maturities of short-term investments		8,652
Change in restricted cash	621
Acquisition of InPlay		(1,600)
Acquisition of Transpera, Inc., net of cash acquired		15
Net cash provided by (used in) investing activities	(783)	6,525
Cash flows from financing activities
Proceeds from the exercise of stock options	173	144
Net cash provided by financing activities	173	144
Net increase (decrease) in cash and cash equivalents	(239)	5,022
Effect of exchange rate changes in cash and cash equivalents	(150)	(11)
Cash and cash equivalents at beginning of period	32,533	31,714
Cash and cash equivalents at end of period	32,144	36,725
Supplemental disclosure of cash flows activities
Cash paid for income taxes	224	101
Cash paid for interest expense	113	93
Supplemental disclosure of non-cash investing activities
Common stock issued in the acquisition of Transpera, Inc.		$ 863