Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2013

Fair Value Measurements

Summary of valuation of financial instrument pricing levels

	Total		Level 1		Level 2		Level 3
June 30, 2013
Available-for-sale securities	$	706,000	$	706,000	$	—	$	—
December 31, 2012
Available-for-sale securities	$	680,000	$	680,000	$	—	$	—