Notes Payable, Collateralized and Short-Term Borrowings (Tables)

6 Months Ended

Jun. 30, 2016

Debt Disclosure [Abstract]

Notes Payable, Collateralized and Short-Term Borrowings

Notes payable, collateralized and short-term borrowings consisted of the following (in thousands):

	June 30, 2016		December 31, 2015
4.50% Convertible Notes	$	159,791	$	157,332
8.125% Senior Notes		109,209		109,147
5.375% Senior Notes		296,592		296,100
8.375% Senior Notes		251,167		255,300
5.125% Senior Notes		295,834		—
Collateralized borrowings		19,633		22,998
Total	$	1,132,226	$	840,877

Carrying Amounts and Estimated Fair Values of Company's Convertible Notes and Senior Notes

The Company’s Convertible Notes and Senior Notes are recorded at amortized cost. As of June 30, 2016 and December 31, 2015, the carrying amounts and estimated fair values of the Company’s Convertible Notes and Senior Notes were as follows (in thousands):

	June 30, 2016				December 31, 2015
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
4.50% Convertible Notes	$	159,791	$	159,800	$	157,332	$	173,700
8.125% Senior Notes		109,209		121,230		109,147		121,095
5.375% Senior Notes		296,592		314,100		296,100		309,750
8.375% Senior Notes		251,167		258,600		255,300		263,724
5.125% Senior Notes		295,834		301,800		—		—
Total	$	1,112,593	$	1,155,530	$	817,879	$	868,269

Summary of Company's Convertible Notes

Below is a summary of the Company’s Convertible Notes (in thousands, except share and per share amounts):

	4.50% Convertible Notes
	June 30, 2016			December 31, 2015
Principal amount of debt component	$	160,000		$	160,000
Unamortized discount		(209	)		(2,668	)
Carrying amount of debt component		159,791			157,332
Equity component		18,972			18,972
Effective interest rate		7.61	%		7.61	%
Maturity date (period through which discount is being amortized)		7/15/2016			7/15/2016
Conversion price	$	9.84		$	9.84
Number of shares to be delivered upon conversion		16,260,160			16,260,160
Amount by which the notes’ if-converted value exceeds their principal amount	$	—		$	—

Summary of Interest Expense Related to Company's Convertible Notes

Below is a summary of the interest expense related to the Company’s Convertible Notes (in thousands):

	4.50% Convertible Notes				8.75% Convertible Notes
	For the three months ended				For the three months ended
	June 30, 2016		June 30, 2015		June 30, 2016		June 30, 2015
Coupon interest	$	1,800	$	1,800	$	—	$	547
Amortization of discount		1,234		1,197		—		—
Total interest expense	$	3,034	$	2,997	$	—	$	547
	4.50% Convertible Notes				8.75% Convertible Notes
	For the six months ended				For the six months ended
	June 30, 2016		June 30, 2015		June 30, 2016		June 30, 2015
Coupon interest	$	3,600	$	3,600	$	—	$	3,828
Amortization of discount		2,459		2,384		—		—
Total interest expense	$	6,059	$	5,984	$	—	$	3,828