Summary of Significant Accounting Policies (Restricted Cash Balances) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Certificates of Deposit \| Compensating Balances, Third Party Credit Card Originator and Debit Card Processor
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and cash equivalents	$ 100	$ 100
Other Interest Bearing Bank Balances \| Compensating Balances, Third Party Credit Card Originator and Debit Card Processor
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted cash and cash equivalents	402	401
Interest rate swap
Restricted Cash and Cash Equivalents Items [Line Items]
Pledged interest bearing bank balances, as collateral	$ 1,975	$ 1,973

- Definition

The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element.

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