Consolidated Balance Sheets - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 7,440,864	$ 14,675,515
Restricted cash	3,887,288	5,050,147
Accounts receivable, net of allowances of $0.1 million as of September 30, 2016 and December 31, 2015	6,641,993	6,406,496
Prepaid expenses and other assets	1,761,184	1,800,566
Total current assets	19,731,329	27,932,724
Other assets:
Restricted cash	551,054	551,917
Property and equipment, net	1,321,342	1,811,619
Software development costs, net	4,177,879	3,964,454
Intangible assets, net	981,279	1,378,264
Goodwill	294,844	286,852
Deferred tax asset and other long-term assets	8,270,540	8,581,082
Total other assets	15,596,938	16,574,188
Total assets	35,328,267	44,506,912
Current liabilities:
Accounts payable	446,946	306,520
Accrued expenses	4,459,360	6,438,600
Due to merchants	4,068,506	5,240,427
Current portion of capital leases	206,873	290,911
Total current liabilities	9,181,685	12,276,458
Long-term liabilities:
Long-term debt	9,916,000
Other long-term liabilities	1,107,982	1,666,938
Total long-term liabilities	11,023,982	1,666,938
Total liabilities	20,205,667	13,943,396
Commitments and contingencies (Note 8)
Stockholders' equity:
Convertible preferred stock-10,000,000 shares authorized as of September 30, 2016 and December 31, 2015, $0.01 par value: Series A-2,243,750 issued and 1,535,398 outstanding as of September 30, 2016 and 2,243,750 issued and outstanding as of December 31, 2015; $6,141,592 and $8,975,000 aggregate liquidation preference as of September 30, 2016 and December 31, 2015, respectively	15,354	22,438
Common stock-250,000,000 shares authorized as of September 30, 2016 and December 31, 2015, $0.01 par value, and 59,230,684 issued and 48,855,330 shares outstanding as of September 30, 2016, and 56,191,389 issued and 52,585,503 shares outstanding as of December 31, 2015	592,307	561,914
Treasury stock, at cost, 10,375,354 shares and 3,605,886 shares as of September 30, 2016 and December 31, 2015, respectively	(31,726,486)	(7,883,012)
Additional paid-in capital	109,870,586	106,741,026
Accumulated other comprehensive loss	(529,197)	(510,445)
Accumulated deficit	(63,099,964)	(68,368,405)
Total stockholders' equity	15,122,600	30,563,516
Total liabilities and stockholders' equity	$ 35,328,267	$ 44,506,912