Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Cash flows from operating activities:
Net income (loss)	$ 3,160,385		$ 22,006		$ (4,452,305)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Stock-based compensation expense	1,263,660		1,227,369		1,075,079
Depreciation and amortization expense	3,016,783		2,872,167		2,831,379
Provision for doubtful accounts	46,652		326,457		136,350
Deferred tax benefit			(583,420)		(66,009)
Disposal of property and equipment			4,979		86,388
Expensing of deferred IPO costs					2,346,210
Accrued insurance proceeds					(100,000)
Gain on insurance settlement			(301,281)
Changes in operating assets and liabilities, net of effects of acquisition
Decrease (increase) in settlement assets	1,055,984		(703,407)		(575,707)
Increase in accounts receivables, prepaid expenses and other current assets	(743,358)		(657,188)		(1,725,523)
Increase in security deposits and other assets	(62,992)		(482,065)		(11,575)
(Decrease) increase in accounts payable and accrued expenses	(2,005,464)		336,367		1,713,071
(Decrease) increase in due to merchants	(419,222)		472,760		409,076
Other	(66,529)		(14,594)		(65,018)
Net cash provided by operating activities	5,245,899		2,520,150		1,601,416
Cash flows from investing activities:
Insurance proceeds			401,281
Increase in restricted cash	(1,738,571)		(26,638)		(9,448)
Increase in merchant reserves	1,752,521
Purchase of property and equipment	(117,412)		(828,730)		(269,557)
Capitalized software development	(1,292,314)		(1,443,010)		(1,360,091)
Purchase of intangible assets	(125,980)		(162,181)		(149,420)
Cash paid for business combination, net of cash acquired					(1,577,829)
Net cash used in investing activities	(1,521,756)		(2,059,278)		(3,366,345)
Cash flows from financing activities:
Proceeds from issuance of common stock	934,032		589,131		774,749
Principal payments on capital lease obligations	(570,249)		(479,992)		(324,795)
Purchases of treasury stock	(822,603)
Payment of IPO costs					(354,531)
Net cash (used in) provided by financing activities	(458,820)		109,139		95,423
Effect of exchange rate changes on cash and cash equivalents	0	[1]	0	[1]	0	[1]
Net increase (decrease) in cash and cash equivalents	3,265,323		570,011		(1,669,506)
Beginning of period	6,572,468		6,002,457		7,671,963
End of period	9,837,791		6,572,468		6,002,457
Cash paid for:
Interest	64,585		63,352		53,994
Income taxes	765,807		568,055		541,933
Non-cash investing and financing activities:
Common stock issued for BPS acquisition					1,596,862
Common stock issued for stock options and warrants exercised	1,390		2,273		13,335
Assets acquired under capital leases	429,611		728,082		530,984
Accrued capitalized hardware, software and fixed assets	74,017		27,566
Capitalized stock-based compensation	$ 52,473		$ 52,133

[1] For the year ended December 31, 2014, 2013 and 2012, the effect of exchange rate changes on cash and cash equivalents was inconsequential.