Consolidated Statements of Stockholders' Equity (Parenthetical) - Common Stock [Member] - USD ($) $ in Thousands	7 Months Ended	12 Months Ended
Dec. 31, 2014	Dec. 31, 2016
Private Placement [Member]
Issuance costs	$ 853
Initial Public Offering [Member]
Issuance costs		$ 2,711

Issuance costs associated with issuance of common stock in private placement.

No definition available.

Name:	plse_IssuanceOfCommonStockIssuanceCosts
Namespace Prefix:	plse_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration