Allowance for Loan and Lease Losses - Loans that were Evaluated for Impairment by Loan Segment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended	12 Months Ended
	Dec. 31, 2013	Jun. 30, 2014	Dec. 31, 2013
Unpaid principal balance [Abstract]
With no related allowance recorded	$ 21,151	$ 22,142	$ 21,151
With an allowance recorded	9,315	1,169	9,315
Recorded investment [Abstract]
With no related allowance recorded	14,671	13,828	14,671
With an allowance recorded	3,835	1,083	3,835
Related allowance [Abstract]
Related allowance	886	101	886
Average recorded investment [Abstract]
With no related allowance recorded		14,954	18,100
With an allowance recorded		2,019	5,655
Interest income recognized [Abstract]
With no related allowance recorded		196	559
Commercial real estate [Member]
Unpaid principal balance [Abstract]
With no related allowance recorded	4,429	5,241	4,429
With an allowance recorded	1,435		1,435
Recorded investment [Abstract]
With no related allowance recorded	4,158	4,510	4,158
With an allowance recorded	1,435		1,435
Related allowance [Abstract]
Related allowance	331		331
Average recorded investment [Abstract]
With no related allowance recorded		4,468	7,956
With an allowance recorded	1,879	504
Interest income recognized [Abstract]
With no related allowance recorded		63	73
Construction and land development [Member]
Unpaid principal balance [Abstract]
With no related allowance recorded	9,850	3,253	9,850
Recorded investment [Abstract]
With no related allowance recorded	3,907	1,843	3,907
Average recorded investment [Abstract]
With no related allowance recorded		3,310	3,933
With an allowance recorded	381	31
Interest income recognized [Abstract]
With no related allowance recorded		26	209
Commercial and industrial [Member]
Unpaid principal balance [Abstract]
With no related allowance recorded	6,693	8,272	6,693
With an allowance recorded	2,592		2,592
Recorded investment [Abstract]
With no related allowance recorded	6,491	6,335	6,491
With an allowance recorded	1,290		1,290
Related allowance [Abstract]
Related allowance	452		452
Average recorded investment [Abstract]
With no related allowance recorded		6,399	5,960
With an allowance recorded	2,456	540
Interest income recognized [Abstract]
With no related allowance recorded		107	250
Residential real estate [Member]
Unpaid principal balance [Abstract]
With an allowance recorded	827	1,090	827
Recorded investment [Abstract]
With an allowance recorded	631	1,004	631
Related allowance [Abstract]
Related allowance	19	30	19
Average recorded investment [Abstract]
With no related allowance recorded			84
With an allowance recorded	492	766
Interest income recognized [Abstract]
With no related allowance recorded			27
Leases [Member]
Unpaid principal balance [Abstract]
With an allowance recorded	139	79	139
Recorded investment [Abstract]
With an allowance recorded	139	79	139
Related allowance [Abstract]
Related allowance	60	71	60
Average recorded investment [Abstract]
With an allowance recorded	106	129
Tax certificates [Member]
Unpaid principal balance [Abstract]
With no related allowance recorded	179	5,376	179
With an allowance recorded	4,322		4,322
Recorded investment [Abstract]
With no related allowance recorded	115	1,140	115
With an allowance recorded	340		340
Related allowance [Abstract]
Related allowance	24		24
Average recorded investment [Abstract]
With no related allowance recorded		777	167
With an allowance recorded	$ 341	$ 49