CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 4,455	$ 8,862
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	5,393	3,324
Stock-based compensation expense	4,447	4,552
Deferred income tax expense	587	194
Excess tax benefits from stock-based awards	(1,263)	0
Allowance for doubtful accounts	755	397
Other non-cash activity	384	106
Changes in operating assets and liabilities, net of acquisitions:
(Increase) decrease in accounts receivable	(4,695)	499
Decrease (increase) in inventories	714	(562)
Decrease (increase) in deferred production and marketing costs and other assets, net	38	(491)
Decrease (increase) in prepaid expenses and other current assets	1,119	(1,509)
Decrease in accounts payable and accrued expenses	(1,284)	(468)
Increase in deferred revenue	1,440	973
Decrease in deferred rent	(576)	(532)
Increase in other liabilities, net	39	9
Net cash provided by operating activities	11,553	15,354
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property and equipment	(652)	(1,433)
Additions to capitalized software	(3,321)	(3,228)
Maturity of U.S. Treasury Bills	2,599	2,598
Purchases of U.S. Treasury Bills	(2,599)	(2,598)
Payment to acquire investment	(4,000)	0
Purchase of intangible assets	(46)	(3)
Acquisitions, net of cash acquired	(5,724)	(600)
Net cash used in investing activities	(13,743)	(5,264)
CASH FLOWS FROM FINANCING ACTIVITIES
Repurchase of common stock	(615)	0
Proceeds from issuance of common stock pursuant to employee stock-based compensation plans	375	276
Proceeds from exercise of stock options	523	197
Excess tax benefits from stock-based awards	1,263	0
Surrender of restricted common stock for income tax purposes	(4,370)	(1,753)
Net cash used in financing activities	(2,824)	(1,280)
(Decrease) increase in cash and cash equivalents	(5,014)	8,810
Cash and cash equivalents at beginning of period	90,697	77,407
Cash and cash equivalents at end of period	$ 85,683	$ 86,217