Commitments and Contingencies Future minimum lease payments for Operating Leases (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Leases [Abstract]
Operating Leases, Future Minimum Payments, Due in Twelve Months		$ 1,148,000
Operating Leases, Future Minimum Payments, Due in Two Years		911,000
Operating Leases, Future Minimum Payments, Due in Three Years		899,000
Operating Leases, Future Minimum Payments, Due in Four Years		817,000
Operating Leases, Future Minimum Payments, Due in Five Years		776,000
Operating Leases, Future Minimum Payments, Due Thereafter		194,000
Operating Leases, Future Minimum Payments Due		4,745,000
Future minimum lease payments for land lease, Total		4,100,000
Operating Leases, Rent Expense	1,483,000us-gaap_LeaseAndRentalExpense	1,527,000us-gaap_LeaseAndRentalExpense	1,682,000us-gaap_LeaseAndRentalExpense
Deferred Rent Credit		180,000us-gaap_DeferredRentCredit	215,000us-gaap_DeferredRentCredit
Deferred Rent Credit, Current		32,000us-gaap_DeferredRentCreditCurrent	35,000us-gaap_DeferredRentCreditCurrent
Sublease remaining term	36 months
Operating Leases, Future Minimum Payments Due, Future Minimum Sublease Rentals	1,900,000
Operating Leases, Rent Expense, Sublease Rentals	(202,000)	0	0
Rent expense in discontinued operations	(160,000)	(145,000)	0
Operating Leases, Rent Expense, Net	$ 1,121,000us-gaap_OperatingLeasesRentExpenseNet	$ 1,382,000us-gaap_OperatingLeasesRentExpenseNet	$ 1,682,000us-gaap_OperatingLeasesRentExpenseNet

Future minimum lease payments for land lease, Total

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- Definition

Rent expense in discontinued operations

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No definition available.

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- Definition

Sublease remaining term

+ References

No definition available.

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- Definition

The cumulative difference between the rental payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense over the term of the leased property by the lessor or lessee, respectively.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 25

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=7501430&loc=d3e39896-112707

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- Definition

For a classified balance sheet, the cumulative difference as of the balance sheet date between the payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense, by the lessor or lessee, respectively, within one year of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.20)

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-Topic 840

-SubTopic 20

-Section 25

-Paragraph 2

-Subparagraph (a)

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- 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.

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 2

-Subparagraph (a)

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-SubTopic 10

-Section 55

-Paragraph 40

-Subparagraph (Note 3)

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- Definition

Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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- Definition

Contractually required future rental payments receivable on noncancelable subleasing arrangements.

+ References

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- Definition

Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717

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- Definition

The total amount of sublease rental income recognized during the period that reduces the entity's rent expense incurred under operating leases.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 55

-Paragraph 40

-Subparagraph (Note 3)

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