Consolidated Statements of Stockholders' Equity (Parenthetical) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Net income (loss) attributable to redeemable noncontrolling interests	$ 1,167
Unrealized gain on foreign currency translation attributable to redeemable noncontrolling interests	(1,047)
Common Stock [Member]
Net income (loss) attributable to redeemable noncontrolling interests	1,167
Unrealized gain on foreign currency translation attributable to redeemable noncontrolling interests	$ 1,047