STOCK-BASED COMPENSATION - Performance Units (Details) - Key Employees - 2008 Plan - Performance Shares	12 Months Ended
Dec. 31, 2017 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum annual cash award \| $	$ 1,000,000.0
Grants since inception of plan (in shares) \| shares	1,563,922

The number of grants made since inception of the plan on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

No definition available.

Name:	bios_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrants
Namespace Prefix:	bios_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration