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Summary of Significant Accounting Policies (Accounts Receivable) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Receivables [Abstract]
Allowance - beginning of period	$ (150)	$ (17)	$ (58)
Allowance for bad debt	(386)	(133)	41
Recoveries from bad debts	76	0	0
Write-off and other	0	0	0
Allowance - end of period	$ (460)	$ (150)	$ (17)

Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).

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