Reconciliation Between Beginning and Ending Balances of Items Measured at Fair Value on Recurring Basis that used Significant Unobservable Inputs (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Contingent Consideration FBM
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balances	$ 330
Gains or losses included in earnings:
Loss on revaluation of contingent consideration
Ending Balances	330
Contingent Consideration CS
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balances	6,488
Gains or losses included in earnings:
Loss on revaluation of contingent consideration	183
Ending Balances	6,671
Benefit Concepts, Inc.
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balances	11,772
Gains or losses included in earnings:
Loss on revaluation of contingent consideration	191
Ending Balances	$ 11,963