Effects of Fair Value Measurements Using Significant Unobservable Inputs on Changes in Level 3 Plan Assets (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Insurance [Abstract]
Beginning Balance	$ 14,654	$ 13,860
Actual return on plan assets:
Relating to assets held at the reporting date	3,134	794
Relating to assets sold during the period	0	0
Purchases, sales and settlements	15,000	0
Ending Balance	$ 32,788	$ 14,654