Property and Equipment (Tables)

9 Months Ended

Sep. 30, 2018

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

The following table summarizes property and equipment as of September 30, 2018 and December 31, 2017:

	September 30,			December 31,
	2018			2017
Medical equipment and facilities	$	93,966,000		$	95,923,000
Office equipment		585,000			576,000
Deposits and construction in progress		1,907,000			1,658,000
Deposits towards purchase of proton beam systems		2,000,000			2,000,000
		98,458,000			100,157,000
Accumulated depreciation		(52,337,000	)		(51,666,000	)
Net property and equipment	$	46,121,000		$	48,491,000