Contractual Maturities of Long Term Debt (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Contractual payments due in less than one year	$ 3,600	$ 3,490
Contractual Payments Due, Total	17,200	47,052
Term Loans
Debt Instrument [Line Items]
Contractual payments due in less than one year	3,600	1,200
Contractual payments due in one to three years	9,000
Contractual payments due in three to five years	4,600
Contractual payments due in more than five years
Contractual Payments Due, Total	$ 17,200	$ 6,900