Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Statement of Cash Flows [Abstract]
Net cash (used in) provided by operating activities	$ (4,936)	$ 7,828
Cash flows from investing activities:
Sale of investment securities	51,218	74,591
Maturities of investment securities	343	947
Purchase of investment securities	(29,112)	(67,628)
Proceeds from sale or liquidation of long-term investments	0	1,216
Purchase of long-term investments	0	(5,000)
Investments in real estate ventures	(5,795)	(7,816)
Distributions from investments in real estate ventures	12	0
Increase in cash surrender value of life insurance policies	(62)	(606)
Increase in restricted assets	(3,017)	(6,933)
Proceeds from sale of fixed assets	0	3
Capital expenditures	(3,915)	(3,156)
Pay downs of investment securities	2,174	1,594
Investments in real estate held for sale	(49)	0
Net cash provided by (used in) investing activities	11,797	(12,788)
Cash flows from financing activities:
Proceeds from issuance of debt	57	0
Deferred financing costs	0	(585)
Repayments of debt	(1,576)	(1,857)
Borrowings under revolver	59,426	107,668
Repayments on revolver	(41,482)	(110,792)
Dividends and distributions on common stock	(48,876)	(46,350)
Contributions from non-controlling interest	248	0
Distributions to non-controlling interest	(5,978)	0
Proceeds from exercise of Vector options	0	809
Tax benefit of options exercised	0	274
Net cash used in financing activities	(38,181)	(50,833)
Net decrease in cash and cash equivalents	(31,320)	(55,793)
Cash and cash equivalents, beginning of period	240,368	326,365
Cash and cash equivalents, end of period	$ 209,048	$ 270,572