Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013		Dec. 31, 2012
Accounts receivable, amounts owed by related parties	$ 554	[1]	$ 771	[1]
Other assets, includes amounts owed by related parties	352	[1]	692	[1]
Accounts payable, amounts owed to related parties	$ 3,038	[1]	$ 2,950	[1]
Common stock, par value	$ 0.0001		$ 0.0001
Common stock, shares authorized	140,000,000		140,000,000
Common stock, shares, outstanding	30,649,061		30,559,935
Treasury stock, shares outstanding	484,660		462,985

[1] Represents balances with West Central