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Commitments, Contingencies and Concentrations of Credit Risk (Narrative) (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Operating Leased Assets [Line Items] |  |  |
Operating Leases, Rent Expense | $ 1,094,000 | $ 805,000 | $ 710,000
Operating Leases, Future Minimum Payments, Next Rolling Twelve Months | 920,000 |  |
Operating Leases, Future Minimum Payments, Due in Rolling Year Two | 932,000 |  |
Operating Leases, Future Minimum Payments, Due in Rolling Year Three | 803,000 |  |
Operating Leases, Future Minimum Payments, Due in Rolling Year Four | 796,000 |  |
Operating Leases, Future Minimum Payments, Due in Rolling Year Five | 803,000 |  |
Operating Leases, Future Minimum Payments, Due in Rolling after Year Five | $ 7,289,000 |  |

X
- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
Name: | us-gaap_LeaseAndRentalExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_OperatingLeasedAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of required minimum rental payments maturing after the fifth rolling twelve months following the latest balance sheet presented for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. + References No definition available. + Details
Name: | us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingAfterYearFive
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of required minimum rental payments maturing in the fifth rolling twelve months following the latest balance sheet presented for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. + References No definition available. + Details
Name: | us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearFive
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of required minimum rental payments maturing in the forth rolling twelve months following the latest balance sheet presented for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. + References No definition available. + Details
Name: | us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearFour
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of required minimum rental payments maturing in the third rolling twelve months following the latest balance sheet presented for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. + References No definition available. + Details
Name: | us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearThree
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of required minimum rental payments maturing in the second rolling twelve months following the latest balance sheet presented for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. + References No definition available. + Details
Name: | us-gaap_OperatingLeasesFutureMinimumPaymentsDueInRollingYearTwo
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of required minimum rental payments maturing in the next rolling twelve months following the latest balance sheet presented for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. + References No definition available. + Details
Name: | us-gaap_OperatingLeasesFutureMinimumPaymentsNextRollingTwelveMonths
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant