Long-term Debt and Interest Rate Caps (Details Textual) (USD $)	1 Months Ended	3 Months Ended		6 Months Ended																												1 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
	Mar. 31, 2010	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2012	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2012	Sep. 28, 2012	May 29, 2012	Dec. 31, 2011	Jun. 30, 2012 Term Loan Credit Facility [Member]	Jun. 30, 2012 Revolving Credit Borrowings [Member]	Mar. 31, 2014 August 2010 Caps [Member]	Dec. 31, 2013 August 2010 Caps [Member]	Sep. 30, 2013 August 2010 Caps [Member]	Jun. 28, 2013 August 2010 Caps [Member]	Mar. 29, 2013 August 2010 Caps [Member]	Dec. 31, 2012 August 2010 Caps [Member]	Sep. 28, 2012 August 2010 Caps [Member]	Aug. 31, 2010 August 2010 Caps [Member]	Mar. 31, 2014 July 2011 Caps [Member]	Dec. 31, 2013 July 2011 Caps [Member]	Sep. 30, 2013 July 2011 Caps [Member]	Jun. 28, 2013 July 2011 Caps [Member]	Mar. 29, 2013 July 2011 Caps [Member]	Dec. 31, 2012 July 2011 Caps [Member]	Sep. 28, 2012 July 2011 Caps [Member]	Jul. 31, 2011 July 2011 Caps [Member]	Aug. 31, 2010 August 2010 [Member]	Mar. 31, 2012 Line of Credit Facility [Member]	Jun. 30, 2012 Line of Credit Facility [Member]	Mar. 31, 2012 Line of Credit Facility [Member] Eurodollar Borrowing [Member]	Jun. 30, 2012 Line of Credit Facility [Member] Eurodollar Borrowing [Member]	Jun. 30, 2012 First Amendment [Member]
Long-term Debt and Interest Rate Caps (Textual) [Abstract]
Original principal amount													$ 99,250,000	$ 106,300,000
Revolving line of credit, Maximum															100,000,000																						175,000,000
Debt instrument basis spread on variable rate under option one																																		0.50%	3.50%	2.40%
Debt instrument basis spread on variable rate under option two																																		1.00%
Debt instrument basis spread on variable rate under option three																																	2.50%	1.40%
Undrawn amount committed under Credit facility																																					0.75%
Facility Fee in account of lenders																																					0.60%
Interest Rate Caps, Notional Amounts					61,075,000	61,775,000	62,475,000	63,175,000	84,925,000	85,825,000	86,725,000									66,675,000	67,375,000	68,075,000	103,300,000	61,075,000	61,775,000	62,475,000	63,175,000	18,250,000	18,450,000	18,650,000
Interest Rate Cap																																three-month average LIBOR cap of 2.0%
LIBOR portion of interest rate owned by company					2.00%	2.00%	2.00%	2.00%	2.00%	2.00%	2.00%																					2.00%
Interest rate caps purchased																															700,000
Long-term Debt and Interest Rate Caps (Additional Textual) [Abstract]
Outstanding term loan indebtedness under Credit Facility		97,300,000		97,300,000								98,300,000
Interest rate per annum on borrowings				An alternate base rate equal to the sum of (i) the greatest of (a) the prime rate of CMB, (b) a federal funds effective rate plus 0.50%, or (c) an adjusted LIBOR-based rate plus 1.0%, and (ii) an applicable interest margin of 1.4% (reduced from 2.5%); or For eurodollar borrowings and borrowings in Euros, Pounds Sterling or Canadian Dollars, the sum of (i) an adjusted LIBOR-based rate, and (ii) an applicable interest margin of 2.4% (reduced from 3.5%).
Up-front fee percentage				0.75%
Amount of up-front fee paid				1,300,000
Accrued interest on credit facility		2.90%		2.90%
Line of credit facility covenant terms				The Credit Facility requires compliance with certain financial covenants, including the following; Maintain a minimum fixed charge coverage ratio in an amount equal to at least 1.125 to 1; Not exceed a maximum leverage ratio of 3.25 to 1; and Maintain a minimum tangible net worth of at least 60% of ION’s tangible net worth as of March 31, 2010.
Fixed charge coverage ratio				1.125
Leverage ratio				3.25
Percentage of tangible net worth for covenants compliance	60.00%
Line of credit facility covenant compliance			As of June 30, 2012, ION was in compliance with these financial covenants and the Company expects to remain in compliance with these financial covenants throughout the remainder of 2012.
Amounts included in accumulated other comprehensive income		400,000
Changes in fair value of the interest rate caps		$ 100,000