Related Party Transactions (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Shareholder
Related Party Transaction
Ownership percentage threshhold for related party	5.00%
Executive Officers, Directors, Shareholders Greater than Five Percent, and Related Entities and Individuals to Such Persons [Member]
Loans and Leases Receivable, Related Parties Disclosure [Abstract]
Loans and leases receivable, related parties	$ 24,669	$ 36,067
Loans and leases receivable, related parties, additions	16,067
Loans and leases receivable, related parties, collections	20,058
Loans and leases receivable, related parties, increase due to change in related parties	7,407
Director, Controlling Ownership Interest in Entity | Insurance Premiums
Loans and Leases Receivable, Related Parties Disclosure [Abstract]
Related party transaction, selling, general and administrative expenses from transactions with related party	764	839	1,328
Board of Directors Chairman, Wholly-Owned Entity | Aircraft Usage and Related Activities
Loans and Leases Receivable, Related Parties Disclosure [Abstract]
Related party transaction, expenses from transactions with related party	309	262	311
Related party transactions, other revenues	61	47	70
1 Shareholder Greater than 5% and 6 Directors
Related Party Transaction
Ownership percentage threshhold for related party	5.00%
Loans and Leases Receivable, Related Parties Disclosure [Abstract]
Ownership Percentage, Related Party	18.00%
Entity Majority Owned by Shareholders and Directors
Loans and Leases Receivable, Related Parties Disclosure [Abstract]
Related party relationship, number of significant shareholders	1
Related party relationship, number of directors	6
Entity Majority Owned by Shareholders and Directors | Education, Communication, Strategic Enterprise Planning and Corporate Governance Consultation
Loans and Leases Receivable, Related Parties Disclosure [Abstract]
Related party transaction, expenses from transactions with related party	224	243	250
Director, Wholly-Owned Entity | Construction Management and Adivsory Services
Loans and Leases Receivable, Related Parties Disclosure [Abstract]
Related party transaction, expenses from transactions with related party	60
Related party transaction, contractual agreement, amount	180
Related party transaction, contractual agreement, percentage of contract price	4.00%
Related party transaction, contractual agreement, initial payment	60
Director | Deferred Compensation Agreement
Loans and Leases Receivable, Related Parties Disclosure [Abstract]
Related party transaction, expenses from transactions with related party		424	38
Related party transaction, liability from acquisition		577
Related party transaction, liability from acquisition, payout period	4 years
Director | Interest Guaranty Agreement, Interest Payments on Loans
Loans and Leases Receivable, Related Parties Disclosure [Abstract]
Revenue from related parties		815	954
Director | Interest Guaranty Agreement, Proceeds From Liquidated Collateral
Loans and Leases Receivable, Related Parties Disclosure [Abstract]
Related party transactions, other revenues	$ 7,998