Related Party Transactions (Details 2) (Lansing Trade Group [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Lansing Trade Group [Member]
Related Party Transaction [Line Items]
Sales	$ 2,222,994	$ 2,553,145
Gross profit	31,056	44,107
Income before income taxes	8,002	17,117
Net income	5,573	16,892
Net income attributable to LTG	$ 5,320	$ 16,798