v2.4.0.6
Condensed Consolidated Statements of Cash Flows (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Cash flows from operating activities:    
Net income $ 1,105 $ 2,605
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization expense 5,397 3,781
Bad debt expense 182 171
Loss on disposal of property and equipment 3 0
Stock-based compensation 2,583 1,512
Non-cash interest expense 24 27
Accounts receivable (2,884) (1,973)
Prepaid expenses and other assets 146 (1,283)
Accounts payable (542) 676
Accrued liabilities (1,509) 752
Deferred revenues 6,415 4,724
Income taxes payable (189) 311
Other noncurrent liabilities (62) (16)
Net cash provided by operating activities 10,669 11,287
Cash flows from investing activities:    
Purchases of property and equipment, net (8,104) (4,250)
Net cash used in investing activities (8,104) (4,250)
Cash flows from financing activities:    
Principal payments under capital lease obligations (1,763) (1,153)
Payment of consideration related to acquisition (1,000) 0
Proceeds from exercise of stock options 1,998 971
Payments for offering costs in connection with initial public offering (560) 0
Proceeds from issuance of Series C Preferred Stock 0 128
Net cash used in financing activities (1,325) (54)
Effect of exchange rate changes on cash 16 (128)
Net increase in cash 1,256 6,855
Cash at beginning of period 24,548 15,010
Cash at end of period 25,804 21,865
Supplemental Cash Flow Information [Abstract]    
Deferred offerings costs incurred but not yet paid 1,973 0
Issuance of common stock for acquisition of license $ 51 $ 0