Debt with Commercial Bank (Narrative) (Details) (USD $)	9 Months Ended				3 Months Ended	9 Months Ended		0 Months Ended		0 Months Ended	9 Months Ended		0 Months Ended	9 Months Ended	0 Months Ended			9 Months Ended	0 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Secured Syndicated Credit Facility [Member] Regions Bank [Member]	Aug. 05, 2014 Secured Syndicated Credit Facility [Member] Regions Bank [Member]	Sep. 30, 2014 Secured Syndicated Credit Facility [Member] Citi Bank [Member]	Sep. 30, 2014 Secured Syndicated Credit Facility [Member] Citi Bank [Member]	Apr. 26, 2012 Secured Syndicated Credit Facility [Member] Citi Bank [Member]	Aug. 05, 2014 Secured Syndicated Credit Facility [Member] Revolving Credit Facility [Member] Regions Bank [Member]	Sep. 30, 2014 Secured Syndicated Credit Facility [Member] Revolving Credit Facility [Member] Regions Bank [Member]	Apr. 26, 2012 Secured Syndicated Credit Facility [Member] Revolving Credit Facility [Member] Citi Bank [Member]	Sep. 30, 2014 Secured Syndicated Credit Facility [Member] Revolving Credit Facility [Member] Citi Bank [Member]	May 19, 2014 Secured Syndicated Credit Facility [Member] Revolving Credit Facility [Member] Citi Bank [Member]	Apr. 26, 2012 Secured Term Loan [Member] Secured Syndicated Credit Facility [Member] Citi Bank [Member]	Sep. 30, 2014 Secured Term Loan [Member] Secured Syndicated Credit Facility [Member] Citi Bank [Member]	Aug. 05, 2014 Minimum [Member] Secured Syndicated Credit Facility [Member] Regions Bank [Member]	Apr. 26, 2012 Minimum [Member] Secured Syndicated Credit Facility [Member] Citi Bank [Member]	Aug. 05, 2014 Mid-range [Member] Secured Syndicated Credit Facility [Member] Regions Bank [Member]	Sep. 30, 2014 Mid-range [Member] Secured Syndicated Credit Facility [Member] Citi Bank [Member]	Aug. 05, 2014 Maximum [Member] Secured Syndicated Credit Facility [Member] Regions Bank [Member]	Apr. 26, 2012 Maximum [Member] Secured Syndicated Credit Facility [Member] Citi Bank [Member]
Line of Credit Facility [Line Items]
Document Period End Date	Sep. 30, 2014
Amortization of Financing Costs					$ 310
Debt instrument, face amount				150,000,000			100,000,000						45,000,000
Debt Instrument, Term								5 years
Line of credit facility, term										4 years
Credit agreement, maximum borrowing capacity								150,000,000		45,000,000
Credit agreement, amortization period													4 years
Line of Credit Facility, Expansion								200,000,000		10,000,000
Description of variable interest rate basis						LIBOR
Basis spread on variable interest rate															1.75%	1.50%	1.94%	1.65%	2.25%	2.00%
Deferred Costs, Credit Card Origination Costs, Amount			1,370,000				744,000
Credit agreement, amount outstanding									63,465,000			7,840,000
Line of credit, interest rate at period end											1.94%
Principal payments of debt obligations	(336,000)	(636,000)									(15,000,000)			(7,600,000)
Credit agreement, average amount outstanding during period											23,600,000
Credit agreement, maximum amount outstanding during period											63,500,000
Long-term Debt														$ 0