Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 34,708	$ 1,447	$ 344
Adjustments to reconcile net income to net cash provided by operating activities, net of acquisitions:
Depreciation and amortization	1,552	1,957	2,885
Provision for doubtful accounts	(100)	(50)	(295)
Deferred income taxes	(30,358)	(28)	58
Share-based compensation	1,469	1,419	1,201
Excess tax benefits from stock options	31
Loss on disposal of fixed assets	9	0	11
Change in fair value of contingent earnout consideration		(231)	144
Lease abandonment			2,230
Changes in operating accounts:
Accounts receivable	(1,508)	5,046	(3,558)
Prepaid expenses and other current assets	476	(660)	274
Other assets	(5)	(11)	(63)
Accounts payable	87	(1,265)	1,254
Accrued liabilities	(374)	(188)	1,718
Deferred revenue	(1,254)	1,400	(370)
Net cash provided by operating activities	4,733	8,836	5,833
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of Fullscope Inc., net of cash acquired			(2,713)
Acquisition of intellectual property	(200)
Capitalization of product development costs	(296)	(235)	(267)
Purchases of property and equipment	(311)	(357)	(518)
Net cash used in investing activities	(807)	(592)	(3,498)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on capital leases		(52)	(148)
Proceeds from employee stock purchase plans and stock option exercises	1,278	763	483
Excess tax benefits from stock options	(31)
Repurchases of common stock	(1,513)	(2,643)	(3,229)
Net cash used in financing activities	(266)	(1,932)	(2,894)
Effects of exchange rates on cash	10	6	(11)
Net increase (decrease) in cash and cash equivalents	3,670	6,318	(570)
CASH AND CASH EQUIVALENTS, beginning of period	16,651	10,333	10,903
CASH AND CASH EQUIVALENTS, end of period	20,321	16,651	10,333
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Interest paid			10
Cash paid for income taxes	266	549	450
NON-CASH INVESTING AND FINANCING ACTIVITIES:
Issuance (forfeiture) of restricted stock awards	$ 1,051		$ (120)