FAIR VALUE MEASUREMENT (Schedule of Assets Measured at Fair Value on Recurring Basis) (Details) (Fair Value Measured on a Recurring Basis [Member], USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Fair value measurement [Line Items]
Fair value of assets	$ 74,681	$ 69,725
Mortgage Servicing Rights [Member]
Fair value measurement [Line Items]
Fair value of assets	21	22
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value measurement [Line Items]
Fair value of assets
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Mortgage Servicing Rights [Member]
Fair value measurement [Line Items]
Fair value of assets
Significant Other Observable Inputs (Level 2) [Member]
Fair value measurement [Line Items]
Fair value of assets	74,660	69,703
Significant Other Observable Inputs (Level 2) [Member] | Mortgage Servicing Rights [Member]
Fair value measurement [Line Items]
Fair value of assets
Significant Unobservable Inputs (Level 3) [Member]
Fair value measurement [Line Items]
Fair value of assets	21	22
Significant Unobservable Inputs (Level 3) [Member] | Mortgage Servicing Rights [Member]
Fair value measurement [Line Items]
Fair value of assets	21	22	25
U.S. Agencies Debt Securities [Member]
Fair value measurement [Line Items]
Fair value of assets	29,415	12,339
U.S. Agencies Debt Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value measurement [Line Items]
Fair value of assets
U.S. Agencies Debt Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair value measurement [Line Items]
Fair value of assets	29,415	12,339
U.S. Agencies Debt Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value measurement [Line Items]
Fair value of assets
Mortgage-backed Securities [Member]
Fair value measurement [Line Items]
Fair value of assets	44,230	56,355
Mortgage-backed Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value measurement [Line Items]
Fair value of assets
Mortgage-backed Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair value measurement [Line Items]
Fair value of assets	44,230	56,355
Mortgage-backed Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value measurement [Line Items]
Fair value of assets
Non-Government Mortgage-backed Securities [Member]
Fair value measurement [Line Items]
Fair value of assets	1,015	1,009
Non-Government Mortgage-backed Securities [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair value measurement [Line Items]
Fair value of assets
Non-Government Mortgage-backed Securities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair value measurement [Line Items]
Fair value of assets	1,015	1,009
Non-Government Mortgage-backed Securities [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair value measurement [Line Items]
Fair value of assets