Loans Receivable and Allowance for Loan Losses - Troubled Debt Restructurings on Financing Receivables (Details) (USD $)	3 Months Ended	6 Months Ended																														6 Months Ended	12 Months Ended																					6 Months Ended	12 Months Ended																																							6 Months Ended	12 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended		6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
	Jun. 30, 2014 loan	Jun. 30, 2014 loan	Dec. 31, 2013	Jun. 30, 2014 Payment concession	Dec. 31, 2013 Payment concession	Jun. 30, 2014 Maturity / Amortization concession	Dec. 31, 2013 Maturity / Amortization concession	Jun. 30, 2014 Rate concession	Dec. 31, 2013 Rate concession	Jun. 30, 2014 Principal forgiveness	Dec. 31, 2013 Principal forgiveness	Jun. 30, 2014 TDR on accrual	Dec. 31, 2013 TDR on accrual	Jun. 30, 2014 TDR on accrual Payment concession	Dec. 31, 2013 TDR on accrual Payment concession	Jun. 30, 2014 TDR on accrual Maturity / Amortization concession	Dec. 31, 2013 TDR on accrual Maturity / Amortization concession	Jun. 30, 2014 TDR on accrual Rate concession	Dec. 31, 2013 TDR on accrual Rate concession	Jun. 30, 2014 TDR on accrual Principal forgiveness	Dec. 31, 2013 TDR on accrual Principal forgiveness	Jun. 30, 2014 TDR on non-accrual	Dec. 31, 2013 TDR on non-accrual	Jun. 30, 2014 TDR on non-accrual Payment concession	Dec. 31, 2013 TDR on non-accrual Payment concession	Jun. 30, 2014 TDR on non-accrual Maturity / Amortization concession	Dec. 31, 2013 TDR on non-accrual Maturity / Amortization concession	Jun. 30, 2014 TDR on non-accrual Rate concession	Dec. 31, 2013 TDR on non-accrual Rate concession	Jun. 30, 2014 TDR on non-accrual Principal forgiveness	Dec. 31, 2013 TDR on non-accrual Principal forgiveness	Jun. 30, 2014 Commercial TDR on accrual loan	Dec. 31, 2013 Commercial TDR on accrual loan	Jun. 30, 2014 Real estate Commercial TDR on accrual	Dec. 31, 2013 Real estate Commercial TDR on accrual	Jun. 30, 2014 Real estate Commercial TDR on accrual Payment concession	Dec. 31, 2013 Real estate Commercial TDR on accrual Payment concession	Jun. 30, 2014 Real estate Commercial TDR on accrual Maturity / Amortization concession	Dec. 31, 2013 Real estate Commercial TDR on accrual Maturity / Amortization concession	Jun. 30, 2014 Real estate Commercial TDR on accrual Rate concession	Dec. 31, 2013 Real estate Commercial TDR on accrual Rate concession	Jun. 30, 2014 Real estate Commercial TDR on accrual Principal forgiveness	Dec. 31, 2013 Real estate Commercial TDR on accrual Principal forgiveness	Jun. 30, 2014 Real estate Commercial TDR on non-accrual	Dec. 31, 2013 Real estate Commercial TDR on non-accrual	Jun. 30, 2014 Real estate Commercial TDR on non-accrual Payment concession	Dec. 31, 2013 Real estate Commercial TDR on non-accrual Payment concession	Jun. 30, 2014 Real estate Commercial TDR on non-accrual Maturity / Amortization concession	Dec. 31, 2013 Real estate Commercial TDR on non-accrual Maturity / Amortization concession	Jun. 30, 2014 Real estate Commercial TDR on non-accrual Rate concession	Dec. 31, 2013 Real estate Commercial TDR on non-accrual Rate concession	Jun. 30, 2014 Real estate Commercial TDR on non-accrual Principal forgiveness	Dec. 31, 2013 Real estate Commercial TDR on non-accrual Principal forgiveness	Jun. 30, 2014 Commercial business TDR on accrual loan	Dec. 31, 2013 Commercial business TDR on accrual loan	Jun. 30, 2014 Commercial business TDR on accrual Payment concession	Dec. 31, 2013 Commercial business TDR on accrual Payment concession	Jun. 30, 2014 Commercial business TDR on accrual Maturity / Amortization concession	Dec. 31, 2013 Commercial business TDR on accrual Maturity / Amortization concession	Jun. 30, 2014 Commercial business TDR on accrual Rate concession	Dec. 31, 2013 Commercial business TDR on accrual Rate concession	Jun. 30, 2014 Commercial business TDR on accrual Principal forgiveness	Dec. 31, 2013 Commercial business TDR on accrual Principal forgiveness	Jun. 30, 2014 Commercial business TDR on non-accrual	Dec. 31, 2013 Commercial business TDR on non-accrual	Jun. 30, 2014 Commercial business TDR on non-accrual Payment concession	Dec. 31, 2013 Commercial business TDR on non-accrual Payment concession	Jun. 30, 2014 Commercial business TDR on non-accrual Maturity / Amortization concession	Dec. 31, 2013 Commercial business TDR on non-accrual Maturity / Amortization concession	Jun. 30, 2014 Commercial business TDR on non-accrual Rate concession	Dec. 31, 2013 Commercial business TDR on non-accrual Rate concession	Jun. 30, 2014 Commercial business TDR on non-accrual Principal forgiveness	Dec. 31, 2013 Commercial business TDR on non-accrual Principal forgiveness	Jun. 30, 2014 Trade Finance and Other TDR on accrual	Dec. 31, 2013 Trade Finance and Other TDR on accrual	Jun. 30, 2014 Trade Finance and Other TDR on accrual Payment concession	Dec. 31, 2013 Trade Finance and Other TDR on accrual Payment concession	Jun. 30, 2014 Trade Finance and Other TDR on accrual Maturity / Amortization concession	Dec. 31, 2013 Trade Finance and Other TDR on accrual Maturity / Amortization concession	Jun. 30, 2014 Trade Finance and Other TDR on accrual Rate concession	Dec. 31, 2013 Trade Finance and Other TDR on accrual Rate concession	Jun. 30, 2014 Trade Finance and Other TDR on accrual Principal forgiveness	Dec. 31, 2013 Trade Finance and Other TDR on accrual Principal forgiveness	Jun. 30, 2014 Trade Finance and Other TDR on non-accrual	Dec. 31, 2013 Trade Finance and Other TDR on non-accrual	Jun. 30, 2014 Trade Finance and Other TDR on non-accrual Payment concession	Dec. 31, 2013 Trade Finance and Other TDR on non-accrual Payment concession	Jun. 30, 2014 Trade Finance and Other TDR on non-accrual Maturity / Amortization concession	Dec. 31, 2013 Trade Finance and Other TDR on non-accrual Maturity / Amortization concession	Jun. 30, 2014 Trade Finance and Other TDR on non-accrual Rate concession	Dec. 31, 2013 Trade Finance and Other TDR on non-accrual Rate concession	Jun. 30, 2014 Trade Finance and Other TDR on non-accrual Principal forgiveness	Dec. 31, 2013 Trade Finance and Other TDR on non-accrual Principal forgiveness	Jun. 30, 2014 Consumer and other TDR on accrual loan	Dec. 31, 2013 Consumer and other TDR on accrual loan	Jun. 30, 2014 Legacy loan	Jun. 30, 2014 Legacy loan	Jun. 30, 2014 Legacy Real estate loan	Jun. 30, 2014 Legacy Real estate loan	Jun. 30, 2014 Legacy Real estate Retail loan	Jun. 30, 2014 Legacy Real estate Retail loan	Jun. 30, 2014 Legacy Real estate Hotel & motel loan	Jun. 30, 2014 Legacy Real estate Hotel & motel loan	Jun. 30, 2014 Legacy Real estate Gas station & car wash loan	Jun. 30, 2014 Legacy Real estate Gas station & car wash loan	Jun. 30, 2014 Legacy Real estate Mixed use loan	Jun. 30, 2014 Legacy Real estate Mixed use loan	Jun. 30, 2014 Legacy Real estate Industrial & warehouse loan	Jun. 30, 2014 Legacy Real estate Industrial & warehouse loan	Jun. 30, 2014 Legacy Real estate Other loan	Jun. 30, 2014 Legacy Real estate Other loan	Jun. 30, 2014 Legacy Commercial business loan	Jun. 30, 2014 Legacy Commercial business loan	Jun. 30, 2014 Legacy Trade finance loan	Jun. 30, 2014 Legacy Trade finance loan	Jun. 30, 2014 Legacy Consumer and other loan	Jun. 30, 2014 Legacy Consumer and other loan	Jun. 30, 2014 Acquired loan	Jun. 30, 2014 Acquired loan	Jun. 30, 2014 Acquired Real estate loan	Jun. 30, 2014 Acquired Real estate loan	Jun. 30, 2014 Acquired Real estate Payment concession loan	Jun. 30, 2014 Acquired Real estate Retail loan	Jun. 30, 2014 Acquired Real estate Retail loan	Jun. 30, 2014 Acquired Real estate Hotel & motel loan	Jun. 30, 2014 Acquired Real estate Hotel & motel loan	Jun. 30, 2014 Acquired Real estate Gas station & car wash loan	Jun. 30, 2014 Acquired Real estate Gas station & car wash loan	Jun. 30, 2014 Acquired Real estate Mixed use loan	Jun. 30, 2014 Acquired Real estate Mixed use loan	Jun. 30, 2014 Acquired Real estate Industrial & warehouse loan	Jun. 30, 2014 Acquired Real estate Industrial & warehouse loan	Jun. 30, 2014 Acquired Real estate Other loan	Jun. 30, 2014 Acquired Real estate Other loan	Jun. 30, 2014 Acquired Real estate Commercial Payment concession loan	Jun. 30, 2014 Acquired Commercial business loan	Jun. 30, 2014 Acquired Commercial business loan	Jun. 30, 2014 Acquired Commercial business Payment concession loan	Jun. 30, 2014 Acquired Commercial business Payment concession loan	Jun. 30, 2014 Acquired Trade finance loan	Jun. 30, 2014 Acquired Trade finance loan	Jun. 30, 2014 Acquired Consumer and other loan	Jun. 30, 2014 Acquired Consumer and other loan
Financing Receivable, Modifications [Line Items]
Troubled debt restructured	$ 65,563,000	$ 65,563,000	$ 58,904,000	$ 18,535,000	$ 20,029,000	$ 19,789,000	$ 13,174,000	$ 27,197,000	$ 25,652,000	$ 42,000	$ 49,000	$ 43,906,000	$ 33,904,000	$ 13,123,000	$ 8,494,000	$ 12,656,000	$ 7,865,000	$ 18,127,000	$ 17,545,000	$ 0	$ 0	$ 21,657,000	$ 25,000,000	$ 5,412,000	$ 11,535,000	$ 7,133,000	$ 5,309,000	$ 9,070,000	$ 8,107,000	$ 42,000	$ 49,000		$ 21,257,000	$ 27,648,000	$ 21,257,000	$ 12,449,000	$ 7,437,000	$ 1,800,000	$ 765,000	$ 13,399,000	$ 13,055,000	$ 0	$ 0	$ 15,402,000	$ 19,249,000	$ 4,073,000	$ 9,489,000	$ 2,339,000	$ 1,653,000	$ 8,990,000	$ 8,107,000	$ 0	$ 0	$ 15,555,000	$ 12,112,000	$ 674,000	$ 1,057,000	$ 10,153,000	$ 6,565,000	$ 4,728,000	$ 4,490,000	$ 0	$ 0	$ 4,314,000	$ 4,984,000	$ 583,000	$ 1,279,000	$ 3,609,000	$ 3,656,000	$ 80,000	$ 0	$ 42,000	$ 49,000	$ 703,000	$ 535,000	$ 0	$ 0	$ 703,000	$ 535,000	$ 0	$ 0	$ 0	$ 0	$ 1,941,000	$ 767,000	$ 756,000	$ 767,000	$ 1,185,000	$ 0	$ 0	$ 0	$ 0	$ 0	$ 703,000	$ 535,000
Number of modified contracts	8	21																														19	15																					30	28																																							3	2	4	11	0	0	1	1	0	0	0	0	0	0	0	1	0	1	3	7	0	1	0	0	4	10	0	0		2	2	0	0	1	1	0	0	0	0	0	1		1	5			0	0	0	1
Troubled Debt Restructuring, By Loan Class
Pre-Modification	4,963,000	10,936,000																																																																																														3,065,000	7,503,000	0	0	523,000	523,000	0	0	0	0	0	0	0	756,000	0	240,000	2,542,000	5,892,000	0	92,000	0	0	1,898,000	3,433,000	0	0		1,075,000	1,075,000	0	0	794,000	794,000	0	0	0	0	0	1,023,000		29,000	346,000			0	0	0	195,000
Post-Modification	4,466,000	11,366,000																																																																																														2,621,000	8,236,000	0	0	514,000	514,000	0	0	0	0	0	0	0	809,000	0	238,000	2,107,000	5,875,000	0	800,000	0	0	1,845,000	3,130,000	0	0		1,062,000	1,062,000	0	0	756,000	756,000	0	0	0	0	0	1,001,000		27,000	124,000			0	0	0	187,000
Troubled Debt Restructuring, By Loan Class, Modified And Subsequent Payment Default
Number of Loans	4	6																																																																																														0	1			0	0			0	0			0	0	0	0	0						4	5			2	1	2	0	0	0	0			0	0	0	0	1	3	3	3	3
Balance	116,000	328,000																																																																																														0	0			0	0			0	0			0	0	0	0	0	0					116,000	328,000			216,000	4,000	216,000	0	0	0	0			0	0	0	0	4,000	112,000	112,000	112,000	112,000
Specific reserves	914,000	1,857,000
Specific reserves for the TDRs	34,000	34,000
Charge offs	45,000	525,000
Specific reserves allocated to TDRs	5,300,000	5,300,000	6,600,000
Troubled debt restructuring , charge offs	$ 0	$ 18,000