Debt - Debt (Parenthetical) (Detail)					3 Months Ended
	Mar. 31, 2014 Six Percent Tangible Equity Units [Member]	Dec. 31, 2013 Six Percent Tangible Equity Units [Member]	Mar. 31, 2014 Secured Debt [Member]	Dec. 31, 2013 Secured Debt [Member]	Mar. 31, 2014 Other indebtedness [Member]	Mar. 31, 2014 Senior secured credit facility [Member] Term loan facility [Member]	Dec. 31, 2013 Senior secured credit facility [Member] Term loan facility [Member]	Dec. 31, 2013 Senior secured credit facility [Member] Revolving Credit Facility [Member]	Mar. 31, 2014 Convertible Debt [Member]
Line of Credit Facility [Line Items]
Average interest rate	6.00%	6.00%	3.15%	3.17%		4.15%	4.17%	4.75%
Interest Rate Percentage									3.75%
Variable and fixed interest rates ranging, minimum					5.00%
Variable and fixed interest rates ranging, maximum					5.50%