Employee Benefit Plans (Details 9a) (Other Benefits Plan, USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Fair Value of plan assets, Ending Balance	$ 25,145	$ 20,408	$ 15,817
Fair Value, Level 1 | Investments
Fair Value of plan assets, Ending Balance	13,089	9,289
Fair Value, Level 1 | Commodities
Fair Value of plan assets, Ending Balance	123	170
Fair Value, Level 1 | Agency/US/State/Municipal Debt
Fair Value of plan assets, Ending Balance	767	780
Fair Value, Level 1 | Mutual Funds - Preferred Stock Index
Fair Value of plan assets, Ending Balance	110	119
Fair Value, Level 1 | Mutual Funds - Diversied Emerging Markets
Fair Value of plan assets, Ending Balance	195	282
Fair Value, Level 1 | Mutual Funds - Foreign Large Growth
Fair Value of plan assets, Ending Balance	151	292
Fair Value, Level 1 | Mutual Funds - Foreign Large Core
Fair Value of plan assets, Ending Balance	780	234
Fair Value, Level 1 | Mutual Funds - Foreign Small Mid Growth
Fair Value of plan assets, Ending Balance	361	303
Fair Value, Level 1 | Mutual Funds - Large Cap Value
Fair Value of plan assets, Ending Balance
Fair Value, Level 1 | Mutual Funds - Large Cap Growth
Fair Value of plan assets, Ending Balance		902
Fair Value, Level 1 | Mutual Funds - Large Cap Core
Fair Value of plan assets, Ending Balance	8,650	5,270
Fair Value, Level 1 | Mutual Funds - Mid Cap Value
Fair Value of plan assets, Ending Balance	658	446
Fair Value, Level 1 | Mutual Funds - Mid Cap Growth
Fair Value of plan assets, Ending Balance	470	290
Fair Value, Level 1 | Mutual Funds - Mid Cap Core
Fair Value of plan assets, Ending Balance	264	104
Fair Value, Level 1 | Mutual Funds - Small Cap Core
Fair Value of plan assets, Ending Balance	290	97
Fair Value, Level 1 | Mutual Funds - Foreign Large Value
Fair Value of plan assets, Ending Balance	86
Fair Value, Level 1 | Mutual Funds - Pacific Asia/ex-Japan Stock
Fair Value of plan assets, Ending Balance	125
Fair Value, Level 1 | Mutual Funds - Real Estate Index
Fair Value of plan assets, Ending Balance	59
Fair Value, Total | Investments
Fair Value of plan assets, Ending Balance	25,145	20,408
Fair Value, Total | Commodities
Fair Value of plan assets, Ending Balance	123	170
Fair Value, Total | Agency/US/State/Municipal Debt
Fair Value of plan assets, Ending Balance	11,928	10,694
Fair Value, Total | Money Market Funds - Cash and Cash Equivalents
Fair Value of plan assets, Ending Balance	895	1,205
Fair Value, Total | Mutual Funds - Preferred Stock Index
Fair Value of plan assets, Ending Balance	110	119
Fair Value, Total | Mutual Funds - Diversied Emerging Markets
Fair Value of plan assets, Ending Balance	195	282
Fair Value, Total | Mutual Funds - Foreign Large Growth
Fair Value of plan assets, Ending Balance	151	292
Fair Value, Total | Mutual Funds - Foreign Large Core
Fair Value of plan assets, Ending Balance	780	234
Fair Value, Total | Mutual Funds - Foreign Small Mid Growth
Fair Value of plan assets, Ending Balance	361	303
Fair Value, Total | Mutual Funds - Large Cap Value
Fair Value of plan assets, Ending Balance
Fair Value, Total | Mutual Funds - Large Cap Growth
Fair Value of plan assets, Ending Balance		902
Fair Value, Total | Mutual Funds - Large Cap Core
Fair Value of plan assets, Ending Balance	8,650	5,270
Fair Value, Total | Mutual Funds - Mid Cap Value
Fair Value of plan assets, Ending Balance	658	446
Fair Value, Total | Mutual Funds - Mid Cap Growth
Fair Value of plan assets, Ending Balance	470	290
Fair Value, Total | Mutual Funds - Mid Cap Core
Fair Value of plan assets, Ending Balance	264	104
Fair Value, Total | Mutual Funds - Small Cap Core
Fair Value of plan assets, Ending Balance	290	97
Fair Value, Total | Mutual Funds - Foreign Large Value
Fair Value of plan assets, Ending Balance	86
Fair Value, Total | Mutual Funds - Pacific Asia/ex-Japan Stock
Fair Value of plan assets, Ending Balance	125
Fair Value, Total | Mutual Funds - Real Estate Index
Fair Value of plan assets, Ending Balance	59
Fair Value, Level 2 | Investments
Fair Value of plan assets, Ending Balance	12,056	11,119
Fair Value, Level 2 | Agency/US/State/Municipal Debt
Fair Value of plan assets, Ending Balance	11,161	9,914
Fair Value, Level 2 | Money Market Funds - Cash and Cash Equivalents
Fair Value of plan assets, Ending Balance	$ 895	$ 1,205