Financial Liabilities - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended		9 Months Ended			3 Months Ended		9 Months Ended				3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended				3 Months Ended		9 Months Ended		0 Months Ended	3 Months Ended	9 Months Ended				0 Months Ended	9 Months Ended	1 Months Ended
	Aug. 14, 2013	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Smartag	Sep. 30, 2013 Bluehill I D	Sep. 30, 2012 Bluehill I D	Sep. 30, 2013 Bluehill I D	Sep. 30, 2012 Bluehill I D	Sep. 30, 2013 Maximum	Sep. 30, 2013 Minimum	Sep. 30, 2013 Acquisition Debt Note Smartag	Sep. 30, 2012 Acquisition Debt Note Smartag	Sep. 30, 2013 Acquisition Debt Note Smartag	Sep. 30, 2012 Acquisition Debt Note Smartag	Sep. 30, 2013 Equipment financing facilities Payment Solution Aktiengesellschaft	Sep. 30, 2012 Equipment financing facilities Payment Solution Aktiengesellschaft	Sep. 30, 2013 Equipment financing facilities Payment Solution Aktiengesellschaft	Sep. 30, 2012 Equipment financing facilities Payment Solution Aktiengesellschaft	Sep. 30, 2013 Equipment financing facilities Maximum Payment Solution Aktiengesellschaft	Sep. 30, 2013 Equipment financing facilities Minimum Payment Solution Aktiengesellschaft	Sep. 30, 2013 Bank loan obligations	Sep. 30, 2012 Bank loan obligations	Sep. 30, 2013 Bank loan obligations	Sep. 30, 2012 Bank loan obligations	Aug. 07, 2013 Hercules Technology Growth Capital Inc	Sep. 30, 2013 Hercules Technology Growth Capital Inc	Sep. 30, 2013 Hercules Technology Growth Capital Inc Installment	Oct. 30, 2012 Hercules Technology Growth Capital Inc	Mar. 05, 2013 Hercules Technology Growth Capital Inc First amendment	Apr. 22, 2013 Hercules Technology Growth Capital Inc Second amendment	Aug. 07, 2013 Hercules Technology Growth Capital Inc Third amendment	Sep. 30, 2013 Hercules Technology Growth Capital Inc Third amendment	Oct. 30, 2012 Hercules Technology Growth Capital Inc Subsequent Event	Oct. 30, 2012 Hercules Technology Growth Capital Inc Subsequent Event Maximum	Oct. 30, 2012 Hercules Technology Growth Capital Inc Subsequent Event Secured notes	Oct. 30, 2012 Hercules Technology Growth Capital Inc Subsequent Event Secured notes Maximum	Oct. 30, 2012 Hercules Technology Growth Capital Inc Subsequent Event Term Loan Facility Initial Draw
Debt Instrument [Line Items]
Term loan																																						$ 10,000,000
Initial advance of the debt note received from lender at the time of issuance																																							7,500,000
Term loan, additional advance																																				2,500,000	10,000,000
Net proceeds from debt offering																																			6,900,000
Debt issuance cost																																			600,000
Additional loan facility																														10,000,000
Term loan, maturity date																													Nov. 01, 2015
Term loan, interest rate term																													Bears interest at a rate of the greater of (i) the prime rate plus 7.75% and (ii) 11.00%.
Additional interest above base rate							2.00%																						7.75%
Interest rate																												11.00%	11.00%
Term loan, payment term																													Interest on the Secured Note is payable monthly beginning on November 1, 2012, and the principal balance is payable in 30 equal monthly installments beginning on May 1, 2013.
Number of monthly installments																													30
Debt instrument, first date of principal payment																												May 01, 2013	May 01, 2013
Payment of financing costs																													150,000
Percentage of financing cost credited to the company if all advances are repaid on maturity																													50.00%
Additional loan fee payable to lender																													1,000,000
Number of installments to pay fees																													3
Debt instrument, additional fees, date of first installment payment																												Oct. 30, 2013	Oct. 30, 2013
Debt interest expense																												200,000	1,100,000
Consideration paid in cash, fees																															76,268	114,397	106,000
Equity financing to raise																											6,000,000
Issuance of common stock in connection with capital raise, net of issuance costs	7,100,000			2,773,000
Warrants issued to purchase common stock																																	992,084
Warrant exercise price																																	0.71
Warrants exercise term (in years)																																	5 years
Private placement warrant estimated volatility	91.57%																																	99.00%
Private placement warrant risk free interest rate	1.08%																																	1.38%
Private placement warrant term	4 years																																	5 years
Fair value of warrants	4,000,000																																500,000
Business acquisition, debt incurred						2,200,000
Business acquisition, debt note interest rate						6.00%			5.50%												18.60%	8.60%			11.15%
Debt payment period after closing date						30 months
Interest expense							16,000	11,000	41,000	40,000			0	11,000	7,000	43,000	100,000	100,000	300,000	300,000			50,000	50,000	200,000	100,000
Maturity year							2026		2026								2014		2014				2017		2017
Debt instrument periodic payment																			200,000
Debt instrument periodic payment per quarter for current year																			300,000
Debt instrument final payment																	800,000		800,000
Debt instrument final payment date																	2014-10		2014-10
Monthly payment towards principal amount									4,800																100,000
Approximate total amount that can be advanced under line of credit							100,000		100,000
Interest accrual on revolving line of credit											11.25%	6.25%
Interest accrual on revolving line of credit over the limit		15.95%		15.95%			10.75%		10.75%
Interest expense on the line of credit		$ 3,000	$ 3,000	$ 9,000	$ 9,000
Percentage of ownership							100.00%		100.00%