Segments (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Summary of segment profit or loss:
Net revenue from external customers	$ 106,015,169	$ 78,311,490
Income from operations	3,262,673	3,969,180
Interest income	241,333	295,602
Interest expense	707,115	791,529
Depreciation and amortization	1,890,926	1,630,645
Income tax expense	878,922	709,631
Wholesale segment [Member]
Summary of segment profit or loss:
Net revenue from external customers	39,441,489	31,660,455
Income from operations	1,415,920	2,792,628
Interest income	226,627	291,927
Interest expense	566,567	734,027
Depreciation and amortization	264,546	233,711
Income tax expense	297,639	428,154
Retail segment [Member]
Summary of segment profit or loss:
Net revenue from external customers	66,573,680	46,651,035
Income from operations	1,846,753	1,176,552
Interest income	14,706	3,675
Interest expense	140,548	57,502
Depreciation and amortization	1,626,380	1,396,934
Income tax expense	$ 544,848	$ 281,477