INVESTMENT AND MORTGAGE-BACKED SECURITIES (Tables)

9 Months Ended

Sep. 30, 2018

INVESTMENT AND MORTGAGE-BACKED SECURITIES [Abstract]

Major Categories of Securities Owned by Entity

The following tables summarize the major categories of securities owned by the Company as of the dates indicated:

	At September 30, 2018
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Debt securities available-for-sale:
Agency Notes	$	5,096	$	—	$	8	$	5,088
Pass-through MBS issued by Government-sponsored Enterprises (“GSEs”)		353,124		1		5,478		347,647
Agency Collateralized Mortgage Obligation (“CMO”)		119,172		227		1,556		117,843
Total debt securities available-for-sale	$	477,392	$	228	$	7,042	$	470,578

	At December 31, 2017
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Investment securities available-for-sale:
Registered Mutual Funds	$	3,779	$	311	$	84	$	4,006
Pass-through MBS issued by GSEs		72,938		16		325		72,629
CMO		278,251		669		165		278,755
Total investment securities available-for-sale	$	354,968	$	996	$	574	$	355,390

Sales of Registered Mutual Funds and Trading Securities

A summary of the sales of marketable equity securities is listed below for the periods indicated:

	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2018		2017		2018		2017
Proceeds:
Marketable equity securities	$	394	$	—	$	923	$	—
Investment securities available-for-sale		—		137		—		240
Trading securities		—		85		—		4,629

Gross Unrealized Losses and Fair Value of Investment Securities by Investment Category and Length of Time in a Continuous Unrealized Loss Position

The following table summarizes the gross unrealized losses and fair value of investment securities aggregated by investment category and the length of time the securities were in a continuous unrealized loss position as of the dates indicated:

	September 30, 2018
	Less than 12 Consecutive Months				12 Consecutive Months or Longer				Total
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Debt securities available-for-sale:
Agency Notes	$	5,088	$	8	$	—	$	—	$	5,088	$	8
Pass through MBS issued by GSEs		289,994		4,546		47,569		932		337,563		5478
Agency CMO		51,362		1,435		4,664		121		56,026		1,556

	December 31, 2017
	Less than 12 Consecutive Months				12 Consecutive Months or Longer				Total
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Investment securities available-for-sale:
Registered Mutual Funds	$	—	$	—	$	2,591	$	84	$	2,591	$	84
Pass through MBS issued by GSEs		55,819		325		—		—		55,819		325
Agency CMO		86,746		96		3,168		69		89,914		165