Borrowings - Maturities and Weighted Average Rates (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Scheduled maturities and weighted average rates of borrowings
Year one	$ 66,036	$ 27,560
Year four	45,500	45,500
Thereafter	58,378	58,378
Total	$ 169,914	$ 131,438
Weighted Average Rate
Year one (as a percent)	0.09%	0.02%
Year four (as a percent)	1.75%	1.76%
Thereafter (as a percent)	7.35%	7.35%
Total (as a percent)	3.03%	3.88%

The weighted average interest rate applicable to debt (including short-term and current portion of long term debt).

No definition available.

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- Definition

The weighted average interest rate applicable to debt (including short-term and current portion of long term debt) maturing within the next twelve months following the date of the latest balance sheet presented in the financial statements.

+ References

No definition available.

+ Details

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- Details

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- Definition

The weighted average interest rate applicable to long-term debt maturing after year five following the date of the latest balance sheet presented in the financial statements.

+ References

No definition available.

+ Details

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- Definition

The weighted average interest rate applicable to long-term debt maturing in year four following the date of the latest balance sheet presented in the financial statements.

+ References

No definition available.

+ Details

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- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

+ Details

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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing 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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 3

-Subparagraph (SX 210.12-04.(a))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690

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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing 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.

+ References

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- Definition

Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing 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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