Fair Value Measurements (Narrative) (Details) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of impaired loans	7	6
Allowance related to impaired loans	$ 5,964,000	$ 5,585,000
Inventories [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans, collateral, discount rate	50.00%
Accounts Receivable [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans, collateral, discount rate	20.00%
Foreclosed [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans, collateral, discount rate	15.00%
Minimum [Member] | Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans, collateral, discount rate	15.00%
Minimum [Member] | Equipment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans, collateral, discount rate	30.00%
Maximum [Member] | Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans, collateral, discount rate	35.00%
Maximum [Member] | Equipment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans, collateral, discount rate	50.00%
Weighted average [Member] | Real Estate [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans, collateral, discount rate	20.00%	21.00%
Fair value measurements, nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans with specific allocation	3,681,000	5,707,000
Allowance related to impaired loans	6,000,000	5,600,000
Impaired loans net of partial charge-offs	2,821,000	10,428,000
Impaired Loans, Financial Assets, Fair Value, Charge-offs	1,100,000	2,900,000
Foreclosed assets, carrying value		1,938,000
Fair value inputs, Level 3 [Member] | Fair value measurements, nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans with specific allocation	3,681,000	5,707,000
Impaired loans net of partial charge-offs	2,821,000	10,428,000
Foreclosed assets, carrying value		$ 1,938,000