Loans and Leases - Aging Analysis of Past Due Payments for Each Loan Portfolio Segment (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Aging analysis of past due payments for each loan portfolio segment [Abstract]
30-59 Days Past Due	$ 835,000		$ 835,000		$ 720,000
60-89 Days Past Due	1,223,000		1,223,000		1,145,000
Non-accrual	5,384,000		5,384,000		9,813,000
Current	440,205,000		440,205,000		403,454,000
Total	447,647,000	$ 377,791,000	447,647,000	$ 377,791,000	415,132,000
Interest income lost on non-accrual loans	193,000	213,000	397,000	488,000
Commercial real estate [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
30-59 Days Past Due					311,000
60-89 Days Past Due	992,000		992,000		533,000
Non-accrual	1,635,000		1,635,000		3,684,000
Current	203,512,000		203,512,000		170,510,000
Total	206,139,000	154,510,000	206,139,000	154,510,000	175,038,000
Construction and land development [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
30-59 Days Past Due	333,000		333,000
Non-accrual	544,000		544,000		636,000
Current	32,909,000		32,909,000		45,026,000
Total	33,786,000	41,180,000	33,786,000	41,180,000	45,662,000
Commercial and industrial [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
30-59 Days Past Due	156,000		156,000		92,000
60-89 Days Past Due					449,000
Non-accrual	919,000		919,000		2,517,000
Current	82,750,000		82,750,000		73,431,000
Total	83,825,000	71,759,000	83,825,000	71,759,000	76,489,000
Multi-family [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Current	16,172,000		16,172,000		13,823,000
Total	16,172,000	13,336,000	16,172,000	13,336,000	13,823,000
Residential real estate [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
30-59 Days Past Due	146,000		146,000		165,000
60-89 Days Past Due	146,000		146,000		162,000
Non-accrual	935,000		935,000		959,000
Current	40,939,000		40,939,000		41,706,000
Total	42,166,000	40,223,000	42,166,000	40,223,000	42,992,000
Leases [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
30-59 Days Past Due	171,000		171,000		152,000
60-89 Days Past Due	85,000		85,000		1,000
Non-accrual	338,000		338,000		317,000
Current	57,496,000		57,496,000		51,113,000
Total	58,090,000	45,925,000	58,090,000	45,925,000	51,583,000
Tax certificates [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
Non-accrual	1,013,000		1,013,000		1,700,000
Current	3,791,000		3,791,000		5,491,000
Total	4,804,000	9,631,000	4,804,000	9,631,000	7,191,000
Consumer [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
30-59 Days Past Due	29,000		29,000
Current	2,636,000		2,636,000		2,354,000
Total	$ 2,665,000	$ 1,227,000	$ 2,665,000	$ 1,227,000	$ 2,354,000