Loans Receivable, Troubled Debt Restructurings (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Method used to account for interest on TDRs [Abstract]
Number of Contracts	119	77
Accrual Status	$ 56,448,000	$ 40,424,000
Number of Contracts	28	38
Non-Accrual Status	5,635,000	19,351,000
Total Number of Contracts	147	115
Total Modifications	62,083,000	59,775,000
Loans restructured using A note and B note workout structures	1,457,000	1,505,000
Residential Mortgage [Member]
Method used to account for interest on TDRs [Abstract]
Number of Contracts	88	57
Accrual Status	33,143,000	22,820,000
Number of Contracts	14	25
Non-Accrual Status	2,279,000	11,537,000
Total Number of Contracts	102	82
Total Modifications	35,422,000	34,357,000
Acquisition and Development [Member]
Method used to account for interest on TDRs [Abstract]
Number of Contracts	4	8
Accrual Status	7,075,000	11,962,000
Number of Contracts	4	1
Non-Accrual Status	1,658,000	388,000
Total Number of Contracts	8	9
Total Modifications	8,733,000	12,350,000
Land [Member]
Method used to account for interest on TDRs [Abstract]
Number of Contracts	14	6
Accrual Status	3,783,000	2,333,000
Number of Contracts	5	6
Non-Accrual Status	787,000	1,931,000
Total Number of Contracts	19	12
Total Modifications	4,570,000	4,264,000
Lines of Credit [Member]
Method used to account for interest on TDRs [Abstract]
Number of Contracts	3	1
Accrual Status	280,000	140,000
Number of Contracts	1	2
Non-Accrual Status	136,000	332,000
Total Number of Contracts	4	3
Total Modifications	416,000	472,000
Commercial Real Estate [Member]
Method used to account for interest on TDRs [Abstract]
Number of Contracts	10	5
Accrual Status	12,167,000	3,169,000
Number of Contracts	3	4
Non-Accrual Status	675,000	5,163,000
Total Number of Contracts	13	9
Total Modifications	12,842,000	8,332,000
Commercial Non-Real Estate [Member]
Method used to account for interest on TDRs [Abstract]
Number of Contracts	0	0
Accrual Status	0	0
Number of Contracts	0	0
Non-Accrual Status	0	0
Total Number of Contracts	0	0
Total Modifications	0	0
Home Equity [Member]
Method used to account for interest on TDRs [Abstract]
Number of Contracts	0	0
Accrual Status	0	0
Number of Contracts	1	0
Non-Accrual Status	100,000	0
Total Number of Contracts	1	0
Total Modifications	100,000	0
Consumer [Member]
Method used to account for interest on TDRs [Abstract]
Number of Contracts	0	0
Accrual Status	0	0
Number of Contracts	0	0
Non-Accrual Status	0	0
Total Number of Contracts	0	0
Total Modifications	0	0
Troubled Debt Restructurings [Member]
Troubled debt restructuring [Abstract]
Number of Contracts	126	95
Pre-Modification Outstanding Recorded Investment	69,404,000	54,056,000
Post-Modification Outstanding Recorded Investment	55,842,000	52,255,000
Troubled Debt Restructurings [Member] | Residential Mortgage [Member]
Troubled debt restructuring [Abstract]
Number of Contracts	85	68
Pre-Modification Outstanding Recorded Investment	34,257,000	30,372,000
Post-Modification Outstanding Recorded Investment	31,310,000	29,815,000
Troubled Debt Restructurings [Member] | Acquisition and Development [Member]
Troubled debt restructuring [Abstract]
Number of Contracts	7	8
Pre-Modification Outstanding Recorded Investment	9,523,000	11,152,000
Post-Modification Outstanding Recorded Investment	7,183,000	10,260,000
Troubled Debt Restructurings [Member] | Land [Member]
Troubled debt restructuring [Abstract]
Number of Contracts	16	9
Pre-Modification Outstanding Recorded Investment	5,130,000	3,985,000
Post-Modification Outstanding Recorded Investment	4,127,000	3,802,000
Troubled Debt Restructurings [Member] | Lines of Credit [Member]
Troubled debt restructuring [Abstract]
Number of Contracts	3	2
Pre-Modification Outstanding Recorded Investment	362,000	332,000
Post-Modification Outstanding Recorded Investment	280,000	332,000
Troubled Debt Restructurings [Member] | Commercial Real Estate [Member]
Troubled debt restructuring [Abstract]
Number of Contracts	14	8
Pre-Modification Outstanding Recorded Investment	20,032,000	8,215,000
Post-Modification Outstanding Recorded Investment	12,842,000	8,046,000
Troubled Debt Restructurings [Member] | Commercial Non-Real Estate [Member]
Troubled debt restructuring [Abstract]
Number of Contracts	0	0
Pre-Modification Outstanding Recorded Investment	0	0
Post-Modification Outstanding Recorded Investment	0	0
Troubled Debt Restructurings [Member] | Home Equity [Member]
Troubled debt restructuring [Abstract]
Number of Contracts	1	0
Pre-Modification Outstanding Recorded Investment	100,000	0
Post-Modification Outstanding Recorded Investment	100,000	0
Troubled Debt Restructurings [Member] | Consumer [Member]
Troubled debt restructuring [Abstract]
Number of Contracts	0	0
Pre-Modification Outstanding Recorded Investment	0	0
Post-Modification Outstanding Recorded Investment	0	0
Troubled Debt Restructurings That Subsequently Defaulted [Member]
Troubled debt restructuring [Abstract]
Number of Contracts	21	20
Pre-Modification Outstanding Recorded Investment	7,780,000	7,550,000
Post-Modification Outstanding Recorded Investment	6,241,000	7,520,000
Troubled Debt Restructurings That Subsequently Defaulted [Member] | Residential Mortgage [Member]
Troubled debt restructuring [Abstract]
Number of Contracts	17	14
Pre-Modification Outstanding Recorded Investment	5,095,000	4,568,000
Post-Modification Outstanding Recorded Investment	4,112,000	4,542,000
Troubled Debt Restructurings That Subsequently Defaulted [Member] | Acquisition and Development [Member]
Troubled debt restructuring [Abstract]
Number of Contracts	1	1
Pre-Modification Outstanding Recorded Investment	2,090,000	2,090,000
Post-Modification Outstanding Recorded Investment	1,550,000	2,090,000
Troubled Debt Restructurings That Subsequently Defaulted [Member] | Land [Member]
Troubled debt restructuring [Abstract]
Number of Contracts	2	3
Pre-Modification Outstanding Recorded Investment	455,000	464,000
Post-Modification Outstanding Recorded Investment	443,000	462,000
Troubled Debt Restructurings That Subsequently Defaulted [Member] | Lines of Credit [Member]
Troubled debt restructuring [Abstract]
Number of Contracts	1	1
Pre-Modification Outstanding Recorded Investment	140,000	140,000
Post-Modification Outstanding Recorded Investment	136,000	140,000
Troubled Debt Restructurings That Subsequently Defaulted [Member] | Commercial Real Estate [Member]
Troubled debt restructuring [Abstract]
Number of Contracts	0	1
Pre-Modification Outstanding Recorded Investment	0	288,000
Post-Modification Outstanding Recorded Investment	0	286,000
Troubled Debt Restructurings That Subsequently Defaulted [Member] | Commercial Non-Real Estate [Member]
Troubled debt restructuring [Abstract]
Number of Contracts	0	0
Pre-Modification Outstanding Recorded Investment	0	0
Post-Modification Outstanding Recorded Investment	0	0
Troubled Debt Restructurings That Subsequently Defaulted [Member] | Home Equity [Member]
Troubled debt restructuring [Abstract]
Number of Contracts	0	0
Pre-Modification Outstanding Recorded Investment	0	0
Post-Modification Outstanding Recorded Investment	0	0
Troubled Debt Restructurings That Subsequently Defaulted [Member] | Consumer [Member]
Troubled debt restructuring [Abstract]
Number of Contracts	0	0
Pre-Modification Outstanding Recorded Investment	0	0
Post-Modification Outstanding Recorded Investment	0	0
Pre-Modification [Member]
Newly restructured loans during the period [Abstract]
Rate Modification	694,000	5,561,000
Contracts	1	5
Term Modifications	1,539,000
Contracts	7
Combination Modifications	26,257,000	37,548,000
Contracts	44	62
Total	28,490,000	43,109,000
Total Contracts	52	67
Pre-Modification [Member] | Residential Mortgage [Member]
Newly restructured loans during the period [Abstract]
Rate Modification	694,000	817,000
Contracts	1	2
Term Modifications	659,000
Contracts	3
Combination Modifications	12,367,000	22,282,000
Contracts	37	43
Total	13,720,000	23,099,000
Total Contracts	41	45
Pre-Modification [Member] | Acquisition and Development [Member]
Newly restructured loans during the period [Abstract]
Rate Modification	0	3,930,000
Contracts	0	1
Term Modifications	0
Contracts	0
Combination Modifications	0	5,580,000
Contracts	0	5
Total	0	9,510,000
Total Contracts	0	6
Pre-Modification [Member] | Land [Member]
Newly restructured loans during the period [Abstract]
Rate Modification	0	552,000
Contracts	0	1
Term Modifications	176,000
Contracts	1
Combination Modifications	816,000	1,927,000
Contracts	4	6
Total	992,000	2,479,000
Total Contracts	5	7
Pre-Modification [Member] | Lines of Credit [Member]
Newly restructured loans during the period [Abstract]
Rate Modification	0	0
Contracts	0	0
Term Modifications	0
Contracts	0
Combination Modifications	0	332,000
Contracts	0	2
Total	0	332,000
Total Contracts	0	2
Pre-Modification [Member] | Commercial Real Estate [Member]
Newly restructured loans during the period [Abstract]
Rate Modification	0	262,000
Contracts	0	1
Term Modifications	704,000
Contracts	3
Combination Modifications	13,074,000	7,427,000
Contracts	3	6
Total	13,778,000	7,689,000
Total Contracts	6	7
Pre-Modification [Member] | Commercial Non-Real Estate [Member]
Newly restructured loans during the period [Abstract]
Rate Modification	0	0
Contracts	0	0
Term Modifications	0
Contracts	0
Combination Modifications	0	0
Contracts	0	0
Total	0	0
Total Contracts	0	0
Pre-Modification [Member] | Home Equity [Member]
Newly restructured loans during the period [Abstract]
Rate Modification	0	0
Contracts	0	0
Term Modifications	0
Contracts	0
Combination Modifications	0	0
Contracts	0	0
Total	0	0
Total Contracts	0	0
Pre-Modification [Member] | Consumer [Member]
Newly restructured loans during the period [Abstract]
Rate Modification	0	0
Contracts	0	0
Term Modifications	0
Contracts	0
Combination Modifications	0	0
Contracts	0	0
Total	0	0
Total Contracts	0	0
Post Modification [Member]
Newly restructured loans during the period [Abstract]
Rate Modification	694,000	5,481,000
Contracts	1	5
Term Modifications	1,522,000
Contracts	7
Combination Modifications	18,727,000	36,456,000
Contracts	44	62
Total	20,943,000	41,937,000
Total Contracts	52	67
Post Modification [Member] | Residential Mortgage [Member]
Newly restructured loans during the period [Abstract]
Rate Modification	694,000	738,000
Contracts	1	2
Term Modifications	657,000
Contracts	3
Combination Modifications	11,388,000	21,861,000
Contracts	37	43
Total	12,739,000	22,599,000
Total Contracts	41	45
Post Modification [Member] | Acquisition and Development [Member]
Newly restructured loans during the period [Abstract]
Rate Modification	0	3,930,000
Contracts	0	1
Term Modifications	0
Contracts	0
Combination Modifications	0	4,914,000
Contracts	0	5
Total	0	8,844,000
Total Contracts	0	6
Post Modification [Member] | Land [Member]
Newly restructured loans during the period [Abstract]
Rate Modification	0	551,000
Contracts	0	1
Term Modifications	176,000
Contracts	1
Combination Modifications	809,000	1,916,000
Contracts	4	6
Total	985,000	2,467,000
Total Contracts	5	7
Post Modification [Member] | Lines of Credit [Member]
Newly restructured loans during the period [Abstract]
Rate Modification	0	0
Contracts	0	0
Term Modifications	0
Contracts	0
Combination Modifications	0	332,000
Contracts	0	2
Total	0	332,000
Total Contracts	0	2
Post Modification [Member] | Commercial Real Estate [Member]
Newly restructured loans during the period [Abstract]
Rate Modification	0	262,000
Contracts	0	1
Term Modifications	689,000
Contracts	3
Combination Modifications	6,530,000	7,433,000
Contracts	3	6
Total	7,219,000	7,695,000
Total Contracts	6	7
Post Modification [Member] | Commercial Non-Real Estate [Member]
Newly restructured loans during the period [Abstract]
Rate Modification	0	0
Contracts	0	0
Term Modifications	0
Contracts	0
Combination Modifications	0	0
Contracts	0	0
Total	0	0
Total Contracts	0	0
Post Modification [Member] | Home Equity [Member]
Newly restructured loans during the period [Abstract]
Rate Modification	0	0
Contracts	0	0
Term Modifications	0
Contracts	0
Combination Modifications	0	0
Contracts	0	0
Total	0	0
Total Contracts	0	0
Post Modification [Member] | Consumer [Member]
Newly restructured loans during the period [Abstract]
Rate Modification	0	0
Contracts	0	0
Term Modifications	0
Contracts	0
Combination Modifications	0	0
Contracts	0	0
Total	$ 0	$ 0
Total Contracts	0	0