Condensed Consolidated Balance Sheets - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 119,401,000	$ 99,126,000
Short-term investments	0	1,440,000
Accounts receivable, net of allowance of $1,678 and $2,589, respectively	100,291,000	100,108,000
Prepaid expenses and other current assets	19,865,000	14,708,000
Total current assets	239,557,000	215,382,000
Property and equipment, net	14,512,000	14,318,000
Operating lease right-of-use assets	39,701,000
Goodwill, net	62,239,000	62,240,000
Deferred income taxes	5,174,000	5,442,000
Other assets	11,000,000	9,768,000
Total assets	372,183,000	307,150,000
Current liabilities:
Accounts payable	17,272,000	18,181,000
Accrued compensation and benefits	34,130,000	29,485,000
Accrued and other liabilities	18,448,000	12,161,000
Deferred revenue	98,195,000	81,894,000
Income taxes payable	1,087,000	3,543,000
Total current liabilities	169,132,000	145,264,000
Operating lease liabilities, long-term	35,800,000
Other non-current liabilities	12,564,000	14,739,000
Shareholders' equity:
Preferred stock, no par value; 20,000,000 shares authorized, no shares issued or outstanding in 2019 and 2018
Common stock, $0.01 par value; 200,000,000 shares authorized; 64,322,067 and 64,860,419 shares issued and outstanding at June 30, 2019 and December 31, 2018, respectively	643,000	649,000
Retained earnings	170,668,000	163,359,000
Accumulated other comprehensive loss	(16,624,000)	(16,861,000)
Total shareholders' equity	154,687,000	147,147,000
Total liabilities and shareholders' equity	$ 372,183,000	$ 307,150,000