Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current Assets:
Cash and cash equivalents	$ 91,121	$ 124,375
Short term investments	10,258	8,581
Accounts receivable, net of allowance of $3,802 and $3,156 in 2014 and 2013, respectively	86,694	71,136
Deferred income taxes	7,335	7,300
Income taxes receivable	1,692
Prepaid expenses and other current assets	9,220	7,346
Total current assets	206,320	218,738
Property and equipment, net	15,037	14,342
Goodwill, net	62,270	62,272
Deferred income taxes	440	427
Other assets	4,551	2,049
Total assets	288,618	297,828
Current liabilities:
Accounts payable	9,660	11,555
Accrued compensation and benefits	19,787	19,465
Accrued and other liabilities	10,422	12,225
Deferred revenue	59,996	53,812
Income taxes payable		7,131
Total current liabilities	99,865	104,188
Other non-current liabilities	12,435	12,054
Shareholders' equity:
Preferred stock, no par value; 20,000,000 shares authorized, no shares issued or outstanding in 2014 and 2013	0	0
Common stock, $0.01 par value; 200,000,000 shares and 100,000,000 shares authorized at June 30, 2014 and December 31, 2013, respectively; 75,120,619 and 76,374,180 shares issued and outstanding at June 30, 2014 and December 31, 2013, respectively	751	764
Retained earnings	182,071	188,604
Accumulated other comprehensive loss	(6,504)	(7,782)
Total shareholders' equity	176,318	181,586
Total liabilities and shareholders' equity	$ 288,618	$ 297,828