CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - DOLLAR THRIFTY (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended		12 Months Ended			3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Sep. 30, 2012 Dollar Thrifty Automotive Group Inc	Sep. 30, 2011 Dollar Thrifty Automotive Group Inc	Sep. 30, 2012 Dollar Thrifty Automotive Group Inc	Sep. 30, 2011 Dollar Thrifty Automotive Group Inc	Dec. 31, 2011 Dollar Thrifty Automotive Group Inc	Dec. 31, 2010 Dollar Thrifty Automotive Group Inc	Dec. 31, 2009 Dollar Thrifty Automotive Group Inc
Interest income	$ 2,000	$ 500	$ 3,800	$ 1,600	$ 4,902	$ 5,551	$ 12,315	$ 370	$ 306	$ 1,334	$ 1,053	$ 1,467	$ 1,584	$ 6,218